CHAPTER Env-Dw 400  PUBLIC WATER SYSTEM CLASSIFICATION AND DESIGN

 

PART Env-Dw 401  PWS CLASSIFICATION; WELL SITING REQUIREMENTS; HYDROGEOLOGIC AND ENGINEERING STUDIES

 

Statutory Authority:  RSA 485:1, II(c); RSA 485:3, I; RSA 485:8

 

Revision Note:

 

          Document #10608, effective 6-1-14, adopted Env-Dw 401.01 through Env-Dw 401.03 within a new Part Env-Dw 401 entitled “PWS Classification; Well Siting Requirements; Hydrogeologic and Engineering Studies” and within a new Chapter Env-Dw 400 entitled “Public Water System Classification and Design.”  Document #10608 also readopted with amendments and renumbered former rules Env-Ws 303.04 entitled “Siting Requirements” and Env-Ws 303.06 entitled “Hydrogeologic or Engineering Study” under a new subtitle as Env-Dw 401.04 and Env-Dw 401.05, respectively.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05.

 

          The former rules Env-Ws 303.03 and Env-Ws 303.06 had last been filed under Document #8498, effective 11-30-05, which had adopted Env-Ws 303.03 and Env-Ws 303.06.  These rules did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10608, effective 6-1-14.

 

          Env-Dw 401.01  Classification as Community Water System.

 

          (a)  The department shall classify a system as a community water system if:

 

(1)  The dwellings, units, or other structures served by the system are suitable for year-round occupancy;

 

(2)  The calculation of the number of year-round residents does not include weekend, seasonal, or other transient or temporary occupants; and

 

(3)  Based on (1) and (2), above, the definition of community water system in RSA 485:I-a, I, is met.

 

          (b)  For purposes of (a)(1), above, a dwelling, unit, or other structure shall be considered suitable for year-round occupancy if it:

 

(1)  Has insulation, a heating system, a year-round potable water supply, and indoor plumbing; and

 

(2)  Is served by a wastewater disposal system that does not discharge untreated waste directly to surface waters and an AC electric power supply.

 

          (c)  The department shall classify a water system as a community water system if the water system will ultimately serve a permanent year-round residential population, even if it initially serves only weekend, seasonal, or other transient or temporary occupants.

 

          (d)  Subject to (e), below, the department shall determine the population being served by:

 

(1)  Using the 2010 census determination of 2.5 people per household for residences with 2 or more bedrooms and the 2010 census determination of 1.5 people per unit for residences with less than 2 bedrooms, efficiency apartments, elderly housing units, or other similar types of residences; or

 

(2)  Analyzing an overlay of water system distribution lines with the most recent U.S. government census estimate using geographic information system data.

 

          (e)  If the water system owner has existing customer records that show a different population than is calculated pursuant to (d), above, the owner may submit the data to the department for purposes of the department’s calculations.

 

Source.  (See Revision Note at part heading for Env-Dw 401) #10608, eff 6-1-14

 

          Env-Dw 401.02  Classification as Non-Community Water System.

 

          (a)  The owner of a community water system may request the department to classify the system as a transient, non-community water system by submitting the following to the department in writing:

 

(1)  A sworn affidavit attesting that fewer than 25 people reside at the location for greater than or equal to 6 months per year; and

 

(2)  One or more of the following types of documentation to demonstrate that the statement provided pursuant to (1), above, is true, complete, and not misleading:

 

a.  Voter registration location for each occupant;

 

b.  Tax records listing the permanent residence for each occupant; or

 

c.  The lease or deed restriction, association by-laws, or legal instrument that limits occupancy by the same people to less than 6 months per year.

 

          (b)  The department shall classify a water system as a non-community water system if the water system is designed to regularly serve 25 or more people per day for 60 or more days per year but is not a community water system.

 

          (c)  The department shall classify a water system serving a kindergarten or day care center as a non-transient non-community water system if the water system serves 25 or more children over a 6 month or longer period, as determined by the number of children for which the facility is licensed by the child care licensing program of the New Hampshire department of health and human services. 

 

Source.  (See Revision Note at part heading for Env-Dw 401) #10608, eff 6-1-14

 

          Env-Dw 401.03  Availability of Information; Updates Required.

 

          (a)  The water system owner shall:

 

(1)  Update the information submitted pursuant to Env-Dw 401.02(a) as necessary; and

 

(2)  Make the information available for review and verification during an inspection of the water system or upon request by the department.

 

          (b)  If the number of year-round residents changes, the owner shall notify the department as soon as practicable but no later than 30 days after learning of the change.

 

Source.  (See Revision Note at part heading for Env-Dw 401) #10608, eff 6-1-14

 

          Env-Dw 401.04  Siting Requirements.  Before a person may enter into a financial commitment for, or initiate construction of, a new public water system or an increase in the capacity of an existing public water system, the person shall:

 

          (a)  Notify the department; and

 

          (b)  To the extent practicable, avoid locating part or all of the new or expanded facility at a site that:

 

(1)  Is subject to a risk greater than 1% from earthquakes, floods, fires or other disasters that could damage the public water system or a portion thereof; or

 

(2)  Except for intake structures, is within the floodplain of a 100-year flood or is lower than any recorded high tide where appropriate records exist.

 

Source.  (See Revision Note at part heading for Env-Dw 401) #10608, eff 6-1-14

 

          Env-Dw 401.05  Hydrogeologic or Engineering Study.

 

          (a)  In a case of noncompliance with the requirements of subtitle Env-Dw or predecessor rules in Env-Ws 300 for the sizing or configuration of water system facilities or failure to meet an MCL, the system owner shall undertake an engineering or other appropriate study to determine the design factors and alternative methods of correcting the deficiencies, the cost of which shall be borne by the owner.

 

          (b)  The owner of a system serving more than 50 service customers shall engage a New Hampshire registered professional engineer or professional geologist, as appropriate, when a study includes engineering design or hydrogeologic investigations or solutions.

 

          (c)  The owner of a system for which a study for a particular MCL has already been done shall not be required to restudy the same scope of work.  Where the exceedance of a MCL continues to occur, the system owner shall undertake other appropriate investigations.

 

Source.  (See Revision Note at part heading for Env-Dw 401) #10608, eff 6-1-14

 

PART Env-Dw 402  GENERAL DESIGN STANDARDS: SYSTEMS SERVING 1,000 OR MORE PEOPLE

 

Revision Note:

 

Document #10609, effective 6-1-14, readopted with amendments and renumbered former rules Env-Ws 370.01 through Env-Ws 370.05 in Part Env-Ws 370 , entitled “General Design Standards:  Serving 1,000 or More People”, under a new subtitle as Env-Dw 402.01 through Env-Dw 402.05, within a new Part Env-Dw 402.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05.  Document #10609 also readopted with amendments and renumbered former rule Env-Ws 344.01, entitled “Treatment of Contaminants by Flow Mix”, as Env-Dw 402.08.

 

The former rules Env-Ws 370.01 through Env-Ws 370.05 had last been filed under Document #8477, effective 11-30-05, and former rule Env-Ws 344.01 had last been filed under Document #8497, effective 11-30-05.  These rules did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10609, effective 6-1-14.

 

          Document #10609 replaces all prior filings for the former rules Env-Ws 370.01 through Env-Ws 370.05 and Env-Ws 344.01.  The prior filings for former rules Env-Ws 370.01 through Env-Ws 370.05 and Env-Ws 344.01, beginning as noted below with Document #6521, effective 6-4-97, which had readopted with amendments the entire Chapter Env-Ws 300, include the following documents:

 

          Env-Ws 370.01-370.03                 Env-Ws 370.04             Env-Ws 370.05

 

          #6521, eff 6-4-97                          #7105, eff 9-23-99         #7499, eff 5-25-01

          #8360, INTERIM, eff 6-4-05         #8477, eff 11-30-05       #8351, eff 5-14-05

          #8477, eff 11-30-05                                                           #8477, eff 11-30-05

 

          Env-Ws 344.01

 

          #6521, eff 6-4-97

          #8360, INTERIM, eff 6-4-05

          #8497, eff 11-30-05

 

          Env-Dw 402.01  Adoption by Reference.

 

          (a)  Except as otherwise required by this part, design of new public water systems serving more than 1,000 people or expansions of existing public water systems wherein the resulting system will serve more than 1,000 people shall be in accordance with the practices and standards set forth in the 2003 edition of "Recommended Standards for Water Works," committee report of the Great Lakes - Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers, as referenced in Env-Dw 404.01 and available as noted in Appendix B, with the following exceptions:

 

(1)  The forward; and

 

(2)  The policy statements.

 

          (b)  If the local legislative body of a political subdivision which owns a public water system does not vote to approve funding for the requirements of the 1987, 1992, 1997, 2003 editions of the "Recommended Standards for Water Works" as compared to the 1982 edition thereof and the improvements are not fully funded by the state, the department shall not require the improvements to be implemented.

 

Source.  (See Revision Note at part heading for Env-Dw 402) #10609, eff 6-1-14

 

          Env-Dw 402.02  Design Review Fee.

 

          (a)  In accordance with RSA 485:8, a fee shall be collected for the review of new public water systems or existing public water systems where conversion from transient use to residential use is proposed.

 

          (b)  As required by RSA 485:8, IV, the applicant shall submit the fee payment at the time of the design review submission.

 

          (c)  The amount of the fee shall be based on the number of residential-type or residential-equivalent units proposed to be served by the new public water system, determined as follows:

 

(1)  For residential-type units, $45 per unit, regardless of the size of the residential units; and

 

(2)  For new non-residential systems, $45 per residential-equivalent unit, rounded off to the nearest full residential-equivalent unit.

 

          (d)  A residential-equivalent unit shall be 300 gallons per day (gpd) average daily demand.

 

          (e)  The department shall determine the number of units the system is designed to accommodate based on the applicant’s system design parameters, proposed plans for additional construction, and other factors bearing on the ultimate system demand.

 

          (f)  Any application for expansion within 2 years of the initial submittal shall be deemed part of the initial water system design and therefore subject to the fee.

 

          (g)  If the average daily demand of a non-residential public water system is less than 150 gpd, the fee shall be zero dollars .

 

          (h)  The maximum fee shall be $7, 515, equivalent to 167 residential units or residential-equivalent units, as applicable.

 

          (i)  No additional fee shall be charged for revised submissions that do not include additional units, or for submissions requesting an extension or expansion of an existing community water system.

 

Source.  (See Revision Note at part heading for Env-Dw 402) #10609, eff 6-1-14

 

          Env-Dw 402.03  Quality of Products and Workmanship.  Where applicable, devices, products, and methods used in the water system’s design, installation, construction, or operation shall meet the specification criteria of the American Water Works Association, as specified in Env-Dw 407.

 

Source.  (See Revision Note at part heading for Env-Dw 402) #10609, eff 6-1-14

 

          Env-Dw 402.04  Public Water System Capacity Assurance.  A proposed community water system or non-transient non-community public water system shall meet the requirements of Env-Dw 602 relative to capacity assurance in order to receive design approval from the department.

 

Source.  (See Revision Note at part heading for Env-Dw 402) #10609, eff 6-1-14

 

          Env-Dw 402.05  Constructed Conveyances; Distribution Systems.  No constructed conveyance that is open or that is designed to be open shall be used in any part of any distribution system that provides drinking water to any member of the public.  Examples of open conveyances that are prohibited include but are not limited to open trenches and aqueducts.

 

Source.  (See Revision Note at part heading for Env-Dw 402) #10609, eff 6-1-14

 

          Env-Dw 402.06  Treatment of Contaminants by Flow Mix.

 

          (a)  For the purpose of this section, “flow mix” means a treatment technique where the flow of water from one or more sources having a particular contaminant exceeding an MCL is combined with flow from one or more different sources with that contaminant below the MCL, so that the resultant flow is reliably and consistently below the MCL for that contaminant.

 

          (b)  The owner of a public water system shall use flow mix as a treatment alternative only:

 

(1)  For contaminants in excess of the MCL specified in Env-Dw 703 through Env-Dw 706; and

 

(2)  In accordance with this section.

 

          (c)  Before beginning the design of a flow mix treatment system, the water system owner shall:

 

(1)  Inform the department that the water system intends to use the flow mix treatment method; and

 

(2)  Submit to the department flow mix calculations based on analyses of its water sources performed within the past 6 years, or a shorter record that demonstrates consistency of quality, that include the concentration and volume ratios proposed to be used for each source that demonstrate that the criteria of (c), below, will be met.

 

          (d)  The department shall approve the use of flow mix if the information submitted pursuant to (b), above, demonstrates that when the sources are combined at the correct ratio, the concentration level of the contaminant proposed to be treated by flow mixing will be reliably and consistently below the applicable MCL.

 

          (e)  The equipment used to verify and document proper flow mix treatment shall include:

 

(1)  One control circuitry for all sources proposed for flow mix;

 

(2)  Flow meters installed to measure the output from each source to be used;

 

(3)  A device, such as a gate valve, on the piping from each source to allow that source's output to be regulated;

 

(4)  A gate valve for the mixture; and

 

(5)  A sample tap for each source and for the mixture.

 

          (f)  The owner shall submit, on a quarterly basis:

 

(1)  Records to document the actual source flows and the calculated, concentration-weighted ratio of the mixture on a monthly calculation basis; and

 

(2)  Certification that the established flow mix ratios have been followed.

 

          (g)  A water quality sample shall be taken and analyzed:

 

(1)  From each source on an annual basis; and

 

(2)  Of the mixture on a quarterly basis.

 

Source.  (See Revision Note at part heading for Env-Dw 402) #10609, eff 6-1-14

 

PART Env-Dw 403  COATINGS, ADDITIVES, AND LEAD PROHIBITION

 

Revision Note:

 

          Document #10610, effective 6-1-14, readopted with amendments and renumbered former Part Env-Ws 305, entitled “Coatings and Additives; Lead Prohibition”, under a new subtitle as Part Env-Dw 403, entitled “Coatings, Additives, and Lead Prohibition”.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05.

 

          The former Part Env-Ws 305 had last been filed under Document #8498, effective 11-30-05.  The rules in former Part Env-Ws 305 did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10610, effective 6-1-14.

 

          Document #10610 replaces all prior filings for the rules formerly in Env-Ws 305.  The prior filings for rules in the former Env-Ws 305, beginning with Document #6521, effective 6-4-97, which had readopted with amendments the entire Chapter Env-Ws 300, include the following documents:

 

          #6521, eff 6-4-97

          #8360, INTERIM, eff 6-4-05

          #8498, eff 11-30-05

 

          Env-Dw 403.01  Coatings, Surfaces, and Additives.

 

          (a)  All chemicals added to drinking water and all coatings and surfaces in contact with drinking water shall be tested and certified in accordance with the applicable direct and indirect additives standard numbers 60 and 61 of the American National Standards Institute (ANSI), as indicated in Table 403-1.

 

          (b)  For chemicals, the original producer of the product shall obtain the certification.  Repackers of chemicals shall not be required to obtain separate certification, provided however, that repackers shall self-certify that the cleanliness of their procedures and purity of the resultant product is equivalent to that required of the original manufacturer.

 

          (c)  Any person who undertakes reformulation of chemicals shall obtain certification in accordance with ANSI 60.

 

          (d)  Agencies or firms providing testing and certification for others shall be certified by the ANSI.

 

          (e)  The applicable ANSI standard for materials covered by (a), above, shall be as specified in Table 403-1, available as specified in Appendix B:

 

Table 403-1: ANSI 60 and 61 APPROVALS

 

Product Type

ANSI Standard Number

Edition

Drinking Water Treatment Chemicals

60

01/05/2004

Pipes and Related Products

61

11/22/2003

Protective (Barrier) Products

61

11/22/2003

Joining and Sealing Materials

61

11/22/2003

Process Media

61

11/22/2003

Mechanical Devices

61

11/22/2003

 

Source.  (See Revision Note at part heading for Env-Dw 403) #10610, eff 6-1-14

 

          Env-Dw 403.02  Prohibition on Use of Lead Pipes, Solder, and Flux.

 

          (a)  All pipe, solder, or flux used in or on drinking water plumbing shall be lead-free as defined by (e), below.

 

          (b)  Unless excluded under (c), below, this section shall apply to the installation or repair of:

 

(1)  Any public water system; and

 

(2) Any plumbing in a residential or non-residential facility providing water for human consumption that is connected to a public water system.

 

          (c)  This section shall not apply to:

 

(1)  Leaded joints necessary for the repair of cast iron pipes;

 

(2)  Pipes, pipe fittings, plumbing fittings, or fixtures, including backflow preventers, that are used exclusively for non-potable water services such as manufacturing, industrial processing, irrigation, outdoor watering, or any other uses where the water is not expected to be used for human consumption; and

 

(3)  Toilets, bidets, urinals, fill valves, flushometer valves, tub fillers, shower valves, fire hydrants, service saddles, or water distribution main gate valves that are 2 inches in diameter or larger.

 

          (d)  The requirements of (a), above, shall apply notwithstanding any contrary provision in the state or local plumbing codes or the rules of the state mechanical licensing board.

 

          (e)  For purposes of this section, the term “lead-free” means:

 

(1)  When used with respect to solders and flux, containing not more than 0.2 percent lead; and

 

(2)  When used with respect to pipes and pipe fittings, containing not more than a weighted average of 0.25 percent lead calculated across the wetted surfaces.

 

Source.  (See Revision Note at part heading for Env-Dw 403) #10610, eff 6-1-14; ss by #12181, eff 5-23-17

 

          Env-Dw 403.03  Distribution Piping Materials Inventory.  The O/O of a community water system (CWS) shall identify and report to the department whether the following construction materials are present in the distribution system of the CWS:

 

          (a)  Lead from piping, solder, caulking, interior lining of distribution mains, alloys, and home plumbing;

 

          (b)  Copper from piping and alloys, service lines, and home plumbing;

 

          (c)  Galvanized piping, service lines, and home plumbing;

 

          (d)  Ferrous piping materials such as cast iron and steel; and

 

          (e)  Asbestos cement pipe.

 

Source.  #12181, eff 5-23-17

 

PART Env-Dw 404  DESIGN STANDARDS FOR LARGE PUBLIC WATER SYSTEMS

 

Revision Note:

 

          Document #10611, effective 6-1-14, readopted with amendments and renumbered former Part Env-Ws 374 under a new subtitle as Part Env-Dw 404.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05. 

 

          The former Part Env-Ws 374 had last been filed under Document #8478, effective 11-30-05.  The rules in former Part Env-Ws 374 did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10611, effective 6-1-14.

 

          Document #10611 replaces all prior filings for the rules formerly in Env-Ws 374.  The prior filings for rules in the former Env-Ws 374, beginning with Document #6521, effective 6-4-97, which had readopted with amendments the entire Chapter Env-Ws 300, include the following documents:

 

          #6521, eff 6-4-97 (as Env-Ws 375)

          #8360, INTERIM, eff 6-4-05 (as Env-Ws 375)

          #8478, eff 11-30-05

 

          Env-Dw 404.01  Adoption by Reference.

 

          (a)  Except as otherwise required by these rules, treatment, distribution, and storage components and all other appurtenances of all public water systems serving over 1,000 people and those providing fire protection by means of street hydrants shall be designed in accordance with the practices and standards set forth in the 2003 edition of “Recommended Standards for Water Works,” committee report of the Great Lakes - Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers, available as noted in Appendix B, with the following exceptions:

 

(1)  The forward;

 

(2)  The policy statements; and

 

(3)  The following sections related to well construction methods:

 

a.  Section 3.2.6.2 d; and

 

b.  Section 3.2.6.6.

 

          (b)  Treatment criteria for:

 

(1)  Surface water filtration shall be as specified in Env-Dw 716; and

 

(2)  Corrosion control shall be as specified in Env-Dw 714.

 

          (c)  Site selection, yield and drawdown testing, and source water protection for wells for community water systems and water quality for new wells shall be as specified in Env-Dw 301 or Env-Dw 302, as applicable.

 

          (d)  Standards for well abandonment shall be as specified in We 600 as adopted by the New Hampshire water well board.

 

          (e)  Standards for submersible pumps shall be as specified in We 600 as adopted by the New Hampshire water well board.

 

          (f)  Standards for installation, maintenance, repair, or replacement of pumps shall be as specified in We 700 as adopted by the New Hampshire water well board.

 

          (g)  Standby power shall be required unless the water system has an adequate alternate backup supply of water meeting minimum pressure requirements.

 

          (h)  The total developed groundwater source capacity shall equal or exceed the design maximum day demand and equal or exceed the design average day demand with the largest producing well out of service.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.02  Submission of Construction Proposals.  Any person proposing to supply water for domestic uses as a public water system shall not construct any new system or enlarge any existing system without first submitting detailed plans of the proposed construction to the department and securing its approval in accordance with the applicable requirements of this chapter.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.03  Proposals for Chemical Additive(s).

 

          (a)  No chemical shall be introduced into a public water system without the specific written approval of the department obtained pursuant to this section.

 

          (b)  A proposal to add one or more chemicals to a public water system shall be submitted to the department in writing, accompanied by:

 

(1)  A report prepared in accordance with Env-Dw 404.04; and

 

(2)  A proposed plan for the treatment program prepared in accordance with Env-Dw 404.05.

 

          (c)  A proposal to add one or more chemicals to a public water system shall be consistent with the design and testing criteria specified in Env-Dw 404.06 and the safety criteria specified in Env-Dw 404.07.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.04  Report for Chemical Additive(s) Proposal.  The report required by Env-Dw 404.03(b)(1) shall include:

 

          (a)  The name and concentration of each chemical proposed to be used;

 

          (b)  A description of the equipment proposed to be used to add the chemical(s) to the water, including as applicable:

 

(1)  The name of the manufacturer;

 

(2)  The manufacturer’s model number; and

 

(3)  The upper and lower dose limits of the equipment;

 

          (c)  The present concentration of that chemical in the water supply, if any;

 

          (d)  The testing protocol for daily determination of that chemical content of the raw and treated water, including:

 

(1)  The location of all sampling points; and

 

(2)  The tests that will be run on the samples; and

 

          (e)  A description of the safety equipment available for protection of operators.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.05  Plan for Chemical Additive(s) Proposal.  The plan required by Env-Dw 404.03(b)(2) shall include:

 

          (a)  Engineering plans for the installation of the equipment;

 

          (b)  The location of the equipment in relation to other equipment; and

 

          (c)  The point in the treatment process where the chemical(s) will be applied.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.06  Design and Testing Criteria for Chemical Additive(s) Proposal.

 

          (a)  Design and testing criteria for chemical additive(s) proposals shall be as specified in this section.

 

          (b)  The chemical(s) shall be applied under positive pressure conditions.

 

          (c)  Equipment shall be protected from siphon action with an approved anti-siphon device.

 

          (d)  A sampling point shall be provided that is at least 75 feet downstream of the point of injection and piped back to the injection station.

 

          (e)  Samples also shall be taken at locations throughout the distribution systems, as specified in the testing protocol submitted pursuant to Env-Dw 404.04(d).

 

          (f)  In addition to tests performed by the operator, samples from the system shall be submitted as required by Env-Dw 700.

 

          (g)  Daily records of testing and dosage shall be:

 

(1)  Maintained as specified by the department pursuant to Env-Dw 700; and

 

(2)  Submitted to the department on a monthly basis, no later than the 15th day of the month following the month for which the report is submitted.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.07  Safety Criteria for Chemical Additive(s) Proposal.

 

          (a)  Safety criteria shall be as specified in this section.

 

          (b)  Treatment systems that add a chemical on a continuous basis shall have at least 2 of the methods identified in (c), below, to prevent a chemical overfeed.

 

          (c)  The following methods to prevent chemical overfeed shall be acceptable:

 

(1)  Connection of the electrical circuit of the chemical feed pump to the electrical circuit of the main water pump;

 

(2)  Installation of a flow-measuring device with a common disconnect interfaced to the circuit powering the chemical feed pump;

 

(3)  Installation of a continuous-reading analytical device for that particular chemical feed with a disconnect interfaced to the chemical feed pump; or

 

(4)  Any other method for which there is an industry standard.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.08  Inspection of Treatment Facilities.

 

          (a)  The department shall inspect treatment facilities at reasonable times.

 

          (b)  The supplier of water shall, upon request of the department:

 

(1)  Allow or provide access to all parts of the treatment facilities; and

 

(2)  Furnish all information and records necessary to complete the inspection.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

          Env-Dw 404.09  Quality of Products and Workmanship.  Where applicable, devices, products, and methods used in the installation, construction, and operation of treatment, distribution, and storage facilities and all other appurtenances to a public water system shall meet the specification criteria of the American Water Works Association, as required by Env-Dw 407.

 

Source.  (See Revision Note at part heading for Env-Dw 404) #10611, eff 6-1-14

 

PART Env-Dw 405  DESIGN STANDARDS FOR SMALL COMMUNITY WATER SYSTEMS

 

Revision Note:

 

          Document #10612, effective 6-1-14, readopted with amendments and renumbered former Part Env-Ws 372 under a new subtitle as Part Env-Dw 405.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05.

 

          The former Part Env-Ws 372 had last been filed under Document #8496, effective 11-30-05.  The rules in former Part Env-Ws 372 did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10612, effective 6-1-14.

 

          Document #10612 replaces all prior filings for the rules formerly in Env-Ws 372.  The prior filings for rules in the former Env-Ws 372, beginning with Document #6521, effective 6-4-97, which had readopted with amendments the entire Chapter Env-Ws 300, include the following documents:

 

          #6521, eff 6-4-97

          #7105, eff 9-23-99

          #8360, INTERIM, eff 6-4-05

          #8496, eff 11-30-05

 

          Env-Dw 405.01  Purpose; Authority.

 

          (a)  As required by RSA 485:8, all proposals to establish or expand a public water system shall be submitted to the department for review and approval before construction.

 

          (b)  The purpose of this part is to specify design criteria for small community water systems.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.02  Applicability.

 

          (a)  The rules of this part shall apply to community water systems, as defined in RSA 485:1-a, I, that serve 25 or more but fewer than 1,000 persons without fire protection provided by street hydrants.

 

          (b)  Water systems serving 1,000 persons or more or having fire protection provided by street hydrants shall be governed by Env-Dw 302, Env-Dw 402, Env-Dw 404, and Env-Dw 602.

 

          (c)  Vacation home developments and conversions from transient use occupancy to year-round residential use shall be considered community water systems as specified in Env-Dw 401.01 (a) through (e).

 

          (d)  A small community water system shall be assumed to serve 2.5 people per household for residences with 2 or more bedrooms.  Residences with fewer than 2 bedrooms, efficiency apartments, elderly housing units, or other similar types of residences where more specific information is provided shall be assumed to serve 1.5 people per residence.

 

          (e)  The department shall determine whether a water system is a small community water system based on the following criteria:

 

(1)  The number of people or households served;

 

(2)  Suitability for year-round occupancy, in accordance with Env-Dw 401.01 (b); and

 

(3)  Whether the occupancy is by the same person(s) on each occasion.

 

          (f)  For the purpose of (e), above, a small community water system shall be one proposed to ultimately serve a permanent, year-round, residential population even if that population is initially weekend or seasonal in nature.

 

          (g)  Those non-transient, non-community (NTNC) water systems whose reliability is directly important to public health, such as schools or other facilities that are used as shelters during public emergencies, shall comply with the design criteria of this part pertaining to the sizing of the water storage tanks and booster pumps and other related appurtenances.

 

          (h)  Existing small community water systems that propose to expand shall comply with the design criteria of this part.

 

          (i)  Existing small community water systems that are ordered by the department to make water system improvements shall comply with the design criteria of this part.

 

          (j)  A water system with 3 or more separate sources or distribution systems, where each source or distribution system serves less than 10 households, shall be considered a small community water system as long as the total number of households served by the multiple sources or distribution systems exceeds 10.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.03  Public Water System Capacity Assurance.  A proposed small community water system shall comply with the capacity requirements of Env-Dw 602 before the operation of such water system begins.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.04  Concept Approval for Proposed Small Community Water Systems.

 

          (a)  No well construction or water system design shall commence on a proposed small community water system until a concept approval is issued by the department.

 

          (b)  Subject to (f), below, the issuance of concept approval for a proposed small community water system shall be based on the following criteria:

 

(1)  Water service from another approved public water system is not available, determined based on the willingness of the potential provider to offer service and a comparison of the overall project cost to extend water service versus the overall project cost of constructing the proposed small community water system;

 

(2)  The method of operation of the proposed small community water system is adequate to ensure that all applicable requirements of subtitle Env-Dw are met;

 

(3)  The proposed small community water system is consistent with state, regional, or local water resource/water supply management plans for the area;

 

(4)  The proposed small community water system ownership and operation is consistent with other New Hampshire public utility commission (PUC) franchises in the area;

 

(5)  The proposed water system will use the best feasible source of water available; and

 

(6)  The proposed small community water system does not have 3 or more separate water supply sources or distribution systems where each source or distribution system will serve less than 10 households.

 

          (c)  For purposes of this section, the best feasible source of water shall be determined based on a comparison of alternatives based on project cost and other technical factors.  Such a comparison shall include capital and operational costs to provide an equivalent level of safe and reliable water supply service, for both domestic and fire flow needs, from an entity having adequate financial and managerial capability.

 

          (d)  Favorable criteria for the best source concept shall include the following:

 

(1)  Larger public water systems;

 

(2)  Public water systems which have full time employees who have higher levels of training and experience in the water works profession;

 

(3)  Public water systems with large volume water storage tank(s); and

 

(4)  Public water systems which have available equipment, controls, and communications that better ensure the reliability of operations and water quality.

 

          (e)  To request concept approval, the applicant shall submit a brief letter identifying the following:

 

(1)  The size of the proposed system;

 

(2)  The type of the proposed system;

 

(3)  The nature of the proposed system; and

 

(4)  A map specifically locating the proposed service area.

 

          (f)  The department shall not approve a proposed small community water system design until the PUC has provided comment concerning whether the water system is subject to PUC jurisdiction. 

 

          (g)  If the PUC asserts that the water system is subject to PUC jurisdiction, the department shall:

 

(1)  Consider all comments submitted by the PUC in its review of the proposed system; and

 

(2)  Not take any action that would interfere with the PUC process.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.05  Preliminary and Final Well Site Selection Report.  Any proposed water supply source for a small community water system to which this part applies shall also meet the requirements specified in Env-Dw 301 or Env-Dw 302, namely the well site selection rules.  A preliminary well site selection report shall be submitted, as specified in Env-Dw 301 or Env-Dw 302, at the same time as the request for concept approval submittal.  The final well site selection report specified in Env-Dw 301 or Env-Dw 302 shall be submitted with or prior to submittal of the water system’s plans and specifications.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.06  Design Review Checklist.

 

          (a)  The person proposing to construct a new small community water system or to expand or modify an existing small community water system shall provide the following to the department:

 

(1)  A letter with the information specified in (b), below;

 

(2)  A copy of the concept approval received pursuant to Env-Dw 405.04;

 

(3)  A copy of the preliminary well siting report in compliance with Env-Dw 301 or Env-Dw 302;

 

(4)  A preliminary business plan in compliance with Env-Dw 602;

 

(5)  A copy of a final well siting report in compliance with Env-Dw 301 or Env-Dw 302;

 

(6)  One copy of plans and specifications for the pumphouse and water distribution system in compliance with Env-Dw 405.21 and Env-Dw 405.32;

 

(7)  One copy of a revised business plan in compliance with Env-Dw 602;

 

(8)  One copy of an operations and maintenance manual in accordance with Env-Dw 503;

 

(9)  Identification of the certified operator for the system;

 

(10)  A verification of distribution pipe installation in accordance with Env-Dw 405.26;

 

(11)  One copy of a final business plan in compliance with Env-Dw 602; and

 

(12)  One copy of an emergency plan in compliance with Env-Dw 503.21.

 

          (b)  The applicant shall provide the following information on the letter required by (a)(1), above:

 

(1)  For existing water systems, the system’s PWS identification (ID) number;

 

(2)  The name and address, by street location and municipality, of the water system or proposed water system;

 

(3)  Whether the project is a proposed water system, a new well, or a modification to an existing water system;

 

(4)  The design flow, in gallons per day (gpd);

 

(5)  The number of residential units or equivalent units based on one unit being equivalent to 300 gpd;

 

(6)  Whether water quality testing has already been done, and if so, the sample identification numbers;

 

(7)  The amount of the design review fee calculated in accordance with Env-Dw 405.07;

 

(8)  The name, mailing address, and daytime telephone number of the project owner and, if the owner is other than an individual, the name of an individual who can be contacted regarding the application on behalf of the owner; and

 

(9)  The name, mailing address, and daytime telephone number of the project designer and, if the project will serve more than 50 units or otherwise has a design flow greater than 20,000 gpd, the professional engineer license number of the project designer.

 

          (c)  The applicant shall sign and date the letter required by (a)(1), above, to certify that the information provided is accurate.

 

          (d)  The plans and specifications for all proposed small community water systems or modifications, including expansions, to existing small community water systems with a design flow greater than 20,000 gpd or with 50 or more service connections shall be stamped by a professional civil or sanitary engineer licensed in the State of New Hampshire.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.07  Design Review Fee.

 

          (a)  As specified in RSA 485:8, III, the applicant shall pay an application fee for the review of:

 

(1)  A proposed small community water system; or

 

(2)  The modification of an existing public water system, including:

 

a.  The conversion of a transient/non-community system from transient use to residential-type use; or

 

b.  The expansion of a small community water system within 2 years of its original approval.

 

          (b)  The fee shall be determined as follows:

 

(1)  For proposed residential-type units, the fee shall be as stated in RSA 485:8, III per unit, regardless of the size of the residential units;

 

(2)  For proposed non-residential units, the fee shall be determined by conversion of the water system design flow to a residential-equivalent unit basis.  For purposes of this rule, a “residential-equivalent unit” means a design flow of 300 gpd;

 

(3)  The design flow for non-residential units shall be as specified in Env-Dw 405.10 or Env-Wq 1008;

 

(4)  The fee for each residential-equivalent unit shall be as stated in RSA 485:8, III.  The calculated fee for non-residential systems shall be determined by rounding off to the nearest full residential-equivalent unit;

 

(5)  In determining the number of units the water system is designed to accommodate, the department shall use system design parameters, proposed plans for additional construction, and other factors bearing on the ultimate design flow for the water system;

 

(6)  The department shall presume that any application for expansion within 2 years of the initial submittal is part of the initial water system design and therefore subject to the design review fee;

 

(7)  If the design flow of a non-residential public water system is less than one-half of a residential equivalent unit, the fee shall be zero dollars;

 

(8)  The maximum fee shall be based on 175 units or equivalent residential units; and

 

(9)  No additional fee shall be charged for revised submissions which do not include additional units, or for submissions requesting an extension or expansion of an existing small community water system.

 

          (c)  The design review fee shall be paid in conjunction with the design review application form submitted as required by Env-Dw 405.06(a)(1).

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.08  Plans.

 

          (a)  Design documents shall provide adequate information to analyze the expected system performance and serve as a detailed permanent record for future owners, maintenance personnel, and the department.

 

          (b)  All water system plans submitted to the department by or on behalf of the water system owner shall be:

 

(1)  Prints or copies of original drawings, with no original drawings or line work and no highlighting unless existing line work is traced;

 

(2)  On paper that is 24 inches by 36 inches;

 

(3)  For site plans, drawn to a scale no greater than one inch equals 60 feet; and

 

(4)  For architectural plans, drawn to the scale of one foot equals 1/4 inch or one foot equals 3/8 inch.

 

          (c)  The plans and other documents shall be neat, fully detailed, and drawn to scale.  All lettering shall be neatly printed or mechanically or electronically set.

 

          (d)  The project plan(s) shall include the following items:

 

(1)  A location key or locus plan, which shall:

 

a.  Be not less than 3 inches by 3 inches;

 

b.  Be on a scale equal to the latest United States Geological Survey (USGS) scale, 1 inch being equal to 2,000 feet, if available; and

 

c.  Identify street names and other principal features;

 

(2)  A title block, which shall include the following:

 

a.  The name of the project, its location, and the design date;

 

b.  The name, mailing address, and daytime phone number of the owner;

 

c.  The name, mailing address, and daytime phone number of the system designer;

 

d.  The scale used; and

 

e.  Space for noting the date(s) of any subsequent plan revisions;

 

(3)  A site plan, which shall be drawn to a scale in the range of one inch being equal to 20 feet to 1 inch being equal to 50 feet and show or identify the following:

 

a.  Property boundaries, the name of each adjacent owner, and the ultimate scope of the project;

 

b.  All roads, existing and proposed wastewater disposal, green areas, north arrow, lot numbers, and property lines;

 

c.  The water distribution piping system including:

 

1.  Pipe size, location, and material;

 

2.  Gate valves and blow-offs;

 

3.  A typical trench section showing depth of cover and bedding material; and

 

d.  Elevation contours at not less than 5 foot intervals; and

 

(4)  The plans for a pumphouse, which shall include the following:

 

a.  At least one detailed scaled plan and elevation and one section view of the proposed pumphouse, piping, and storage tanks;

 

b.  The building dimensions, elevations, and construction details, and finished site grading;

 

c.  All construction materials to be used for floors, walls, roof, and stairs;

 

d.  Pipe sizes and materials, valves such as check, gate, and pressure reducing valves, water meter(s), sampling taps, air compressor(s), storage tanks, booster pumps, heat, lights, ventilation, and any gravity floor drains; and

 

e.  An electrical wiring schematic including all water system control devices such as on/off switches and low water level alarms.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.09  Specifications.

 

          (a)  The specifications accompanying design plans shall include, but not be limited to:

 

(1)  All construction information not shown on the plans necessary to inform the builder of the design requirements as to the quality of materials, workmanship, and fabrication of the project and the type, size, strength, operating characteristics, and rating of equipment;

 

(2)  The requirements for all mechanical and electrical equipment, including valves, piping, and jointing of pipe;

 

(3)  Electrical apparatus, wiring, meters, construction materials, and miscellaneous appurtenances; and

 

(4)  Instructions for testing materials and equipment as necessary to meet design standards, and operating tests for the completed works and component units.

 

          (b)  The specifications shall include specific references to the following national standards:

 

(1)  The appropriate American Water Works Association (AWWA) manufacturing standards with respect to piping, valving and related appurtenances;

 

(2)  The appropriate AWWA standards for construction of the water system;

 

(3)  The AWWA standards for disinfecting water mains, AWWA C651-86; and

 

(4)  The AWWA standard for hydrostatic testing of water mains, AWWA C600, Section 4, or equivalent.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.10  Design Flow.

 

          (a)  Subject to (b), below, anticipated design flows for a proposed small community water system shall be based on the type of use, as specified in Table 405-1 below:

 

Table 405-1: Anticipated Design Flows

 

Type of Use

Design Flow

Single family homes

150 gpd per bedroom

Recreational/vacation homes

150 gpd per bedroom

Mobile homes

150 gpd per bedroom

Apartments/Condominiums

150 gpd per bedroom

Efficiency Apartments

225 gpd per unit

Elderly Housing:

 

One bedroom

150 gpd per unit

2 or more bedrooms

100 gpd per bedroom

Nursing Homes

125 gpd per bed

Dormitories

100 gpd per student

Other Institutions

135 gpd per bed

 

          (b)  If the specific type of use is not listed above, the design flow shall be determined in accordance with Env-Wq 1008.

 

          (c)  For small community water systems that are being expanded or upgraded, the design flow shall be determined either in accordance with (a) and (b), above, or by using historical water readings in accordance with one of the following:

 

(1)  By finding the daily average flow from water meter readings and multiplying the average by a minimum factor of 2 or a maximum factor of 3 depending on the type or frequency of the meter readings; or

 

(2)  By examining 12 months of consecutive daily water meter readings, in which case the water system’s design flow shall be based on the highest daily flow noted, without application of a multiplying factor.

 

          (d)  Since design flows contained in Table 405-1 and Env-Wq 1008 do not include exterior water use, for those water systems where watering lawns and garden, filling swimming pools, supplying fire protection systems such as hydrants or sprinklers, and other unusually high water demand situations are expected, additional supply capacity shall be provided.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.11  Acceptable Sources of Water Supply.

 

          (a)  The use of surface water shall not be allowed for any small community water system.

 

          (b)  A minimum of 2 wells shall be required for the following systems:

 

(1)  A community water system where the design flow exceeds 13,500 gpd; and

 

(2)  Any NTNC water system whose reliability is directly important to the public health as specified in Env-Dw 405.02(g) and where the residential-equivalent units exceeds 30.

 

          (c)  If connection to a municipal water system is proposed, the applicant shall submit to the department a letter of confirmation from the supplying water system owner.

 

          (d)  The letter of confirmation shall state that:

 

(1)  Adequate quantities of water are available to serve the proposed water system; and

 

(2)  With the proposed water system on-line, adequate system pressures will be maintained.

 

          (e)  Design criteria for municipal water system piping extensions shall be as specified in Env-Dw 404.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.12  Required Source Capacity.

 

          (a)  The required minimum total source capacity for community water systems and those NTNC water systems whose reliability is directly important to public health as specified in Env-Dw 405.02(g) shall be not less than 2 times the design flow for the water system based on a 24-hour day.

 

          (b)  For small community water systems and NTNC water systems whose reliability is directly important to public health as specified in Env-Dw 405.02(g) that are required to have 2 or more wells, the minimum total permitted production volume with the largest source out of service shall be equal to or greater than 50% of the system’s design flow.

 

          (c)  For all types of water systems, the minimum total permitted production volume shall not be less than the design flow for the water system.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.13  Well Location.

 

          (a)  Well(s) shall be located at least 50 feet from surface waters, wetlands, and natural drainage ways.

 

          (b)  The wellhead shall be above the 100-year flood level, provided, however, that where a well must be located within a flood way, the area immediately surrounding the well and pumphouse shall be built up above the 100-year flood elevation.

 

          (c)  Well siting for small community water system sources shall be as specified in Env-Dw 301 or Env-Dw 302.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.14  Sanitary Protective Area and Permitted Production Volume for Groundwater Sources.

 

          (a)  To protect the long-term quality of each public water system, a sanitary protective area shall be established around each groundwater source and a permitted production volume shall be assigned to the source based on the size of the sanitary protective area established.  The sanitary protective area shall be a circle with a specified radius, centered on the well.

 

          (b)  The sanitary protective area for small community water systems shall be in accordance with Env-Dw 301 or Env-Dw 302.

 

          (c)  The total permitted production volume shall be at least equal to the required source capacity based on a 24-hour period defined by the pumping test in accordance with Env-Dw 405.15.

 

          (d)  The sanitary protective area shall be based on the permitted production volume established by the system, as specified in Table 405-2, below:

 

Table 405-2: Sanitary Protective Area

 

Permitted Production Volume (gpd)

Sanitary Protective Radius Length (ft.)

0 – 750

75

751 – 1440

100

1441 – 4320

125

4321 – 14,400

150

14,401 - 28,800

175

28,801 - 57,600

200

57,601 - 86,400

250

86,401 – 115,200

300

115,201 - 144,000

350

Greater than 144,000

400

 

          (e)  When more than one well is inside the sanitary protective area of another well, the individual sanitary protective areas for these wells shall be based on the combined permitted production volume of the wells unless the applicant demonstrates through hydrogeological means that the wells are not interconnected.

 

          (f)  Land use within the sanitary protective area for small community water systems shall be in accordance with Env-Dw 301 or Env-Dw 302.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.15  Pumping Tests.

 

          (a)  For all NTNC water systems whose reliability is directly important to public health as specified in Env-Dw 405.02(g), the water system owner shall demonstrate adequate source capacity by a sustained 48-hour pumping test at a constant rate before final plans can be approved.  The pumping test shall demonstrate stabilized drawdown for at least the last 12 hours of the test.  Stabilization is defined as a drawdown of less than one inch in 2 hours.  If stabilization is not achieved, the pumping test shall continue and the department shall be contacted.

 

          (b)  The water system owner shall submit data documenting the pumping test on a pumping test log sheet that includes the following items:

 

(1)  Well depth, in feet;

 

(2)  The date of the pumping test;

 

(3)  The pumping rate, in gallons per minute (gpm);

 

(4)  The level of water in the well prior to pumping in feet below top of casing;

 

(5)  The drawdown level during pumping, in feet below top of casing;

 

(6)  The time the test was initiated and concluded and the total hours of the test; and

 

(7)  A graph showing drawdown versus time curve, to scale.

 

          (c)  Each log sheet shall be identified by project name, location, and submittal date.

 

          (d)  Readings for water level and pumping rate shall be taken at least every hour so long as the change in drawdown exceeds 2 feet per hour.  Thereafter, readings may be taken at appropriate intervals not to exceed 4 hours.  Readings shall be direct measurements and not inferred from pump curves or other inferential methods.

 

          (e)  Where wells are within 150 feet of each other, the pumping tests shall be run simultaneously.

 

          (f)  Pumping tests for small community water systems shall be performed in accordance with Env-Dw 301 or Env-Dw 302.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.16  Water Supply Quality.

 

          (a)  Prior to the end of the pumping test, the water system owner shall take a water sample from each source and have the sample analyzed for quality by a laboratory accredited for the analysis requested.  Results from unaccredited laboratories shall not be accepted.  Wells for small community water systems shall also be sampled in accordance with Env-Dw 301 or Env-Dw 302.  Dip samples from wells shall not be acceptable.

 

          (b)  Special containers and sampling techniques shall be required for those sources which will supply small community water systems as specified in Env-Dw 707 through Env-Dw 713.

 

          (c)  Water quality shall meet the appropriate standards established in Env-Dw 703 through Env-Dw 706 or shall be capable of meeting these standards with approved treatment.  The analysis shall have been performed within the previous 6 months.

 

          (d)  Subject to (e), below, the water system owner shall submit the results of the laboratory analyses to the department as originals or photostatic copies of the original laboratory report.  Re-typing or re-writing the data shall not be acceptable.

 

          (e)  The water system owner may have the results submitted directly to the department by the laboratory.  If the laboratory submits results directly, the results shall be submitted in the same format as results on existing water systems.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.17  System Concept.

 

          (a)  For any particular water supply project there is likely more than one approvable water system design concept.  This part shall not be interpreted to specify a particular design concept, but to ensure water system adequacy and reliability.  Factors which shall govern the design criteria of the 4 most common water system design concept types used for small community water systems and for those NTNC water systems whose reliability is directly important to public health as specified in Env-Dw 405.02(g) are listed in (b) through (e), below.  Modification of the design concepts identified in (b) through (e), below by the water system designer shall be allowed where the modification can be justified as a waiver pursuant to Env-Dw 405.35.

 

          (b)  A hydropneumatic or pressure storage only type of water system, also known as a straight pressure system, shall require multiple high capacity wells and pumps.

 

          (c)  An atmospheric storage and hydropneumatic storage type of water system shall require:

 

(1)  One or more wells with low or intermediate yields that discharge into a relatively large capacity atmospheric storage tank; and

 

(2)  High capacity booster pumps rated at the peak flow of the water system to re-pump or re-pressurize water from this tank into a smaller hydropneumatic storage tank for direct feed into the water distribution piping system.

 

          (d)  An atmospheric storage and variable speed booster pumps type of water system shall require:

 

(1)  One or more wells with low or intermediate yields that discharge into a large capacity atmospheric storage tank; and

 

(2)  High capacity variable speed booster pumps rated at the peak flow of the water system to re-pump or re-pressurize water from this tank for direct feed into the water distribution piping system.

 

          (e)  A gravity storage type of water system shall require atmospheric storage at a high elevation, wherein:

 

(1)  A minimum pressure of 20 pounds per square inch (psi) during peak flow periods shall be required at the highest service connection on the water system, requiring that the highest service connection be at least 6 feet lower, measured vertically, than the bottom of the storage tank; and

 

(2)  Additional elevation shall be required to compensate for frictional losses through the water distribution piping system and atmospheric storage tank drawdown.

 

          (f)  If limited fire protection service is to be provided, the following water system design criteria shall be observed:

 

(1)  Where fire hydrants are planned by the water system owner, at least one additional separate water storage tank shall be installed and the fire hydrants shall connect to only the separate water storage tank(s).  The re-fill pipe for this water storage tank shall incorporate an air gap.  There shall be no connection between the domestic water system and the fire storage tank(s);

 

(2)  Where residential sprinklers are planned to be installed within the premises of one or more customers, the service line and domestic plumbing shall be appropriately increased in size.  The service line shall be sized to accommodate a design flow rate specified in the state fire code, Saf-C 6000.  The sprinkler piping shall be isolated from the domestic plumbing by at least a testable double check valve.  The minimum duration of sprinkler flow shall be assumed to be 10 minutes; and

 

(3)  Additional provisions for source capacity and storage facilities shall be made in the water system’s design to accommodate fire flows.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.18  Sizing of Storage Tanks.

 

          (a)  The criteria specified in this section shall apply to small community water systems and to those NTNC water systems whose reliability is directly important to public health as specified in Env-Dw 405.02(g).

 

          (b)  The required atmospheric water storage capacity for a water system with only one well shall be based on the safe yield of the well and the water system’s design flow, as specified in Table 403-3 below:

 

Table 405-3:  Requirement for Atmospheric Water Storage Capacity

For Water Systems That Have Only One Source

 

Groundwater Source Capacity

Atmospheric water storage capacity required

Peak  flow

50 percent of design flow

2.5 times the design flow

75 percent of design flow

2.0 times the design flow

100 percent of design flow

Less than 2.0 times the design flow

Not acceptable

 

          (c)  The required atmospheric water storage capacity for a water system with more than one well shall be based on the safe yields of the wells and the water system’s design flow, as specified in Table 403-4 below:

 

Table 405-4: Requirement for Atmospheric Water Storage Capacity

For Water Systems That Have More Than One Source

 

Minimum groundwater source capacity with largest producing well out-of-service

Atmospheric water storage capacity required

Peak flow

none required

2.5 times the design flow

25 percent of design flow

1.5 times the design flow

50 percent of design flow

Design flow

75 percent of design flow

Less than design flow

100 percent of design flow

 

          (d)  The required hydropneumatic storage capacity shall be 10 percent of total design flow.

 

          (e)  Pre-charged pressure storage tanks shall be accepted on an equivalent gross volume basis to conventional hydropneumatic storage.  No more than 6 tanks of the pre-charged pressure type shall be permitted.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.19  Peak Flow.

 

          (a)  The relationship between peak flow and design flow shall be defined by the following Table 405-5 for residential type developments and schools:

 

Table 405-5: Peak Flow Charts

 

          (b)  If the specific type of use is not listed above, the department shall be contacted to determine the peak flow multiplying factor.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.20  Sizing and Installing Booster Pumps.

 

          (a)  All small community water systems and those NTNC water systems important to the public health as specified in Env-Dw 405.02(g) shall comply with this section relative to booster pumps, which withdraw water from atmospheric storage tanks and pump to hydropneumatic or pressure tanks.

 

          (b)  Where booster pumps are used, total booster pump capacity shall be at least equal to peak flow.  Booster pumps shall be in duplicate.

 

          (c)  Booster pumps shall be connected to a flat, secure surface of sufficient strength to withstand vibration, thrust, and weight.  The installed elevation of the pump base shall be at least 8 inches above the finished floor in the pumphouse.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.21  Pumphouse Design and Construction.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  Pumphouses shall have screened gravity floor drains or equivalent with all floors pitched Ľ inch per foot toward the drains.  Sump pumps shall not be acceptable.  The drain pipes shall not discharge to any surface water and shall be screened at the discharge end to prevent small animals or insects from blocking flow.  The pumphouse floor level shall be above the seasonal high water table.

 

          (c)  The layout of equipment and the design of the pumphouse shall provide for convenient operation and preventative maintenance.  The design and materials shall include provisions to minimize vandalism damage to wells, doors, and roofs.  Windows shall be avoided.  The pump station walls and ceilings shall be fully insulated.  Construction materials shall be highly resistant to moisture, decay, and vandalism.

 

          (d)  For all proposed pumphouses, the applicant shall make every reasonable effort to design and construct the pumphouse at finished grade.  Where constraints are encountered, the pumphouse may be as much as 5 feet below grade.  If the floor of the pumphouse is below grade, the design shall address the “confined space rules” of the U.S. Department of Labor, Occupational and Health Administration (OSHA) as specified in 29 CFR 1910.146.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.22  Pumps and Auxiliary Equipment.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  In addition to the electrical control system, an alarm system shall be provided to note failure of pumps and low water levels in the atmospheric storage tank(s).  Each alarm function shall be labeled and the alarm shall be equipped with a silencing mechanism.

 

          (c)  In instances where the pumphouse is not easily seen, the alarm system shall be of an auto dialer for telephone, radio, or audio signal to insure that the alarmed condition is communicated to nearby occupied residences or other locations acceptable to the department where action can be initiated.

 

          (d)  A water meter shall be installed on each incoming source line before the water enters the storage tank(s).

 

          (e)  A pressure gauge shall be provided.  Gauges shall be installed with gauge cocks for isolation and of suitable range for the expected pressure range.

 

          (f)  The water system shall be capable of receiving an immediate addition of a disinfectant.

 

          (g)  Components of the system required by (f) above, shall include:

 

(1)  An injection tap on source water feed lines, before all water storage tanks;

 

(2)  An electrical outlet interconnected with the source pump electrical system; and

 

(3)  A flow indicator on the source water feed lines to prevent over chlorination.

 

          (h)  The pump controls shall have a manual “off/on” switch to control pump operations.

 

          (i)  Where an air compressor is provided for air which will be in direct contact with drinking water, the air compressor shall be of the oil-less type.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.23  Well Appurtenances and Pump Installation.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  No well installed after June 4, 1997 shall be placed inside a pumphouse or building being served by the water system.

 

          (c)  Well casings shall project at least one foot above finished grade.

 

          (d)  For bedrock wells installed prior to June 4, 1997 that are inside a pumphouse where the floor is below finished grade, the well casing shall extend above the finished floor at least 2 feet.

 

          (e)  A tight seal shall be provided around all entry ports into the well.  Provisions shall be made to allow the removal of well pump for repair.

 

          (f)  All well sources shall be capable of being separately sampled for water quality before entering storage tank(s).

 

          (g)  Wells shall have an appropriately-sized air tube or alternative provisions for electronic drawdown probes permanently installed in the well so as to allow determination of the static and drawdown water levels.  Wells existing as of November 1, 2005 shall conform with this requirement when the well pump is replaced or when well pump repair work is next done.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.24  Appurtenances and Installation of Storage Tanks.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  All water storage tanks shall have drains.  All water storage tanks installed outdoors shall be totally backfilled to minimize damage to the tank coating, and any damage to the exterior coating during construction shall be repaired prior to tank backfill.  Water storage tanks shall be located above the seasonal high ground water table to prevent possible flotation when empty.  Proposals to bury the water storage tank into or below the water table shall not be acceptable.

 

          (c)  Atmospheric water storage tanks shall have a downward turned “U” vent with fine mesh screening to prevent the entry of small living things such as insects and small animals.

 

          (d)  To help ensure the integrity of water storage tanks, all buried steel water storage tanks shall:

 

(1)  Be installed in accordance with current industry practice;

 

(2)  Be provided with an adequate underdrain system or a passive cathodic protection system; and

 

(3)  Have a protective coating both inside and out that is certified as being manufactured and applied in accordance with the approved listings in Env-Dw 403.

 

          (e)  Atmospheric water storage tanks shall be equipped with a capped filler pipe, which shall be lockable if located on the exterior of the tank, to accommodate tank truck water delivery.

 

          (f)  All water storage tanks larger than 500 gallons and installed after January 1, 1996 shall have a name plate identifying the following:

 

(1)  Year of manufacture;

 

(2)  Size; and

 

(3)  Pressure rating.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.25  Wiring and Control Devices.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  All wiring for water system controls and equipment shall be in accordance with the requirements of the version of the National Electrical Code used as the basis for licensing electricians in New Hampshire, as specified in Elec 404.04.

 

          (c)  All electrical devices shall be grounded by a separate and dedicated groundwire.

 

          (d)  Convenience outlets shall be of the ground fault interrupting type.

 

          (e)  All junction boxes, relays, and contactors shall be in enclosures.

 

          (f)  Conduits shall be run no less than 2 feet above the floor.  Panels shall be mounted at least 3.5 feet above the floor.

 

          (g)  All equipment disconnects shall be capable of being locked out during service.

 

          (h)  Motorized equipment shall have a functional overload protection above and beyond the protection offered by fuses or circuit breakers.  Excluded from this requirement shall be items such as fans, chemical feed pumps, mixers, treatment sequence timers, and dehumidifiers.

 

          (i)  All relays and starters not part of an integrated panel shall be labeled.

 

          (j)  A detail schematic of the electrical system shall be posted in the enclosure or in an obvious place in the pumphouse, and shall also be part of the operational manual.

 

          (k)  For all systems, the pump controls shall have a manual “off/on/auto” switch to control pump operations where water is pumped into a vented tank or the equivalent.  Where the water is pumped into a pressure system, a pressure relief valve or spring loaded “on” switch shall be provided.

 

          (l)  Mercury-type float switches shall not be in direct contact with drinking water, and shall, if present, be removed and replaced.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.26  Water Treatment Facilities.

 

          (a)  Water treatment processes at small community water systems shall:

 

(1)  Maximize the effectiveness of treatment;

 

(2)  Have sufficient controls and monitors to identify treatment performance and aid in operation;

 

(3)  Support reliability and flexibility of operations;

 

(4)  Have low capital and operational costs;

 

(5)  Be easily repaired; and

 

(6)  Be sized and configured consistent with the practices and standards of the professional water treatment industry.

 

          (b)  Each water system owner who wishes to install or modify a treatment process shall submit the following to the department in writing:

 

(1)  The name, location, and PWS ID number of the system;

 

(2)  The name, mailing address, and daytime telephone number of an individual who is knowledgeable about the proposed treatment process who can answer questions about the proposal on behalf of the owner;

 

(3)  A description of the proposed treatment process, including how the process functions conceptually;

 

(4)  A technical design proposal which identifies necessary equipment, chemicals, plumbing, and electrical elements, as specified in Env-Dw 405.27;

 

(5)  A description of the anticipated treatment wastes and their disposal, in accordance with Env-Dw 405.28; and

 

(6)  An operation and maintenance manual, as specified in Env-Dw 405.29; and

 

(7)  A monitoring plan for determining the quality of the treated water and waste flows, as specified in Env-Dw 405.30.

 

          (c)  The department shall approve the water treatment process application if the department determines that the proposal meets the criteria specified in (a), above, and any item-specific criteria listed in Env-Dw 405.27 through Env-Dw 405.30.

 

          (d)  The department shall inform the applicant of its decision in writing.  If the decision is to not approve the proposal, the decision shall specify the reason(s) for the non-approval.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.27  Criteria of the Technical Design Proposal.  The technical design proposal required by Env-Dw 405.26(b)(4) shall:

 

          (a)  Identify the water treatment process to be used and the equipment to be installed;

 

          (b)  Describe the chemical(s), plumbing, and electrical control modifications that represent a complete treatment process;

 

          (c)  Include a tabular summary of laboratory sampling results analyzed by a New Hampshire-accredited laboratory, which identifies:

 

(1)  The contaminant(s) to be modified by the treatment process; and

 

(2)  All other water quality factors, by name and concentration, that are predicted to be modified by the treatment process;

 

          (d)  Describe the expected water quality change by the water treatment process, including:

 

(1)  The concentration of the target contaminant at normal and peak production rates; and

 

(2)  The concentrations of all other affected water quality parameters at normal and peak production rates;

 

          (e)  Identify the configuration of all components of the treatment process, including:

 

(1)  The rationale for a series or parallel configuration;

 

(2)  The number of trains of equipment; and

 

(3)  A description of each pretreatment process;

 

          (f)  Describe the design goal of the treatment process, as follows:

 

(1)  Removal of the contaminant(s) to de minimis levels; or

 

(2)  A reduction of the contaminant so as to achieve compliance with the maximum contaminant levels or the maximum contaminant level goals specified in Env-Dw 702 through Env-Dw 705;

 

          (g)  Identify, as appropriate, the criteria used for each treatment component of the process, including:

 

(1)  The loading rate;

 

(2)  The detention time or empty bed contact time;

 

(3)  The backwash or regeneration flow rate required; and

 

(4)  The concentration of target contaminant selected to control the end of the treatment cycle;

 

          (h)  Require a sampling tap to be installed between each treatment component of the treatment process and identify plumbing appurtenances throughout the treatment sequence, including:

 

(1)  Connecting pipe size, gate valves, check valves, unions, and bypasses;

 

(2)  Meter(s) and their type including whether indicating, totalizing, or recording; and

 

(3)  Flow restrictors and their rating;

 

          (i)  Identify measuring, control, and communication/alarm equipment, including:

 

(1)  Chemical feed pump pacing method and associated equipment;

 

(2)  Flow switch interrupt of chemical feed equipment when there is no production flow; and

 

(3)  Other automatic monitoring and communication devices; and

 

          (j)  For each treatment chemical to be used:

 

(1)  Identify the chemical and the anticipated concentration(s) to be used during both the initial start-up phase and the operational phase, if different; and

 

(2)  Include the following information:

 

a.  Documentation that the chemical is approved for drinking water use in accordance with the American National Standards Institute (ANSI) standard 60 as required in Env-Dw 403; and

 

b.  A copy of the material safety data sheet (MSDS) for that chemical.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.28  Disposal of Treatment Wastes and By-Products.  The proposal for disposal of treatment wastes and by-products required by Env-Dw 405.26(b)(5) shall:

 

          (a)  Identify the volume and strength of treatment wastes and by-products expected to be generated;

 

          (b)  Identify whether the expected treatment wastes or by-products are hazardous and cite the applicable rule(s);

 

          (c)  Identify the state agency having jurisdiction over the treatment wastes or by-products;

 

          (d)  Identify the method(s) proposed to dispose of the treatment wastes or by-products; and

 

          (e)  Estimate the annual cost of waste disposal.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.29  Operation and Maintenance Manual.

 

          (a)  The builder of the public water system shall prepare an operation and maintenance manual for the water system owner to submit to the department.

 

          (b)  The manual shall be bound so as to provide a permanent document for the water system owner and a ready reference for the water system operator.

 

          (c)  The operation and maintenance manual shall include:

 

(1)  A schematic drawing of the treatment process, which shall identify each unit of the treatment equipment by:

 

a.  Type;

 

b.  Size;

 

c.  Model number; and

 

d.  Any appurtenances;

 

(2)  An original or a photocopy of the description of the treatment equipment from the manufacturer's catalogue;

 

(3)  A separate schematic drawing of the treatment process in the normal production configuration, which shall include:

 

a.  A written description of the process, which shall reference the schematic drawing and show flow direction; and

 

b.  The approximate expected values, settings or feed rates for pumps, gauges, gate valves and controllers in the production mode;

 

(4)  A separate schematic drawing of the treatment process in the normal backwash or regeneration configuration, which shall include:

 

a.  A written description which references the schematic drawing, showing the backwash or regeneration process functions which shall include:

 

1.  The flow rate of backwash or regeneration and its temperature dependency where applicable;

 

2.  The duration of backwash or regeneration; and

 

3.  The frequency of anticipated backwashes or regenerations; and

 

b.  The approximate expected values, settings, or feed rates for pumps, gauges, gate valves and controllers in the backwash mode;

 

(5)  Recommended short- and long-term maintenance schedules for each piece of equipment;

 

(6)  A description of common operational problems and proposed corrective operator responses;

 

(7)  A description of how the operator can maximize the efficiency of the treatment process relative to:

 

a.  Energy use;

 

b.  Chemical use;

 

c.  Maximizing the net treated water production volume;

 

d.  Minimizing the volume of waste and by-products produced; and

 

(8)  A blank copy of the compliance and oversight operational form that is required by Env-Dw 503 to be submitted to the department when a water system performs treatment.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.30  Water Quality Monitoring Plan.  The water quality monitoring plan required by Env-Dw 405.26(b)(7) shall:

 

          (a)  Identify appropriate raw water test parameters and sampling frequencies;

 

          (b)  Identify appropriate finished water test parameters and sampling frequencies;

 

          (c)  Include any proposed modifications to the finished water sampling schedules once a data record is established showing the consistency and reliability of the treatment process; and

 

          (d)  Identify the treated water safety factor, as specified in Env-Dw 707.02, for changing sampling frequencies.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.31  Verification of Quality of Distribution Pipe Installation.

 

          (a)  Water distribution piping at small community water systems shall be installed in accordance with the provisions of the appropriate AWWA specification listed in Env-Dw 407, as applicable to the type of distribution pipe chosen.

 

          (b)  At a proposed small community water system, the quality of the workmanship and adherence to the approved design and pipe specifications shall be documented in writing to the department in accordance with (c) through (g), below.  Such certification shall not be required for the expansion or modification of the distribution system once the initial design has been completed and the water system has been assigned an PWS ID number.

 

          (c)  The person who owns and is proposing the creation of the new small community water system shall retain the services of a qualified third party who is not an employee or otherwise has a financial interest in the project or legal relationship with the project principals to certify the quality of the water distribution piping installation.

 

          (d)  The following parties shall be acceptable to the department for providing certification:

 

(1)  A New Hampshire-certified water distribution system operator with a grade III or higher certificate;

 

(2)  A New Hampshire-licensed civil or sanitary engineer;

 

(3)  A city or town building or code enforcement official or other person with significant experience in drinking water industry specifications for piping and pipe installation of the city or town in which the project is located; or

 

(4)  A public water system designer.

 

          (e)  Certification from the owner or developer of the water system or from the contractor performing the distribution pipe installation shall not be acceptable.

 

          (f)  The person or firm selected as the third party to inspect the quality of the distribution piping installation shall:

 

(1)  Inspect a minimum of 20% of the total footage for each size of water distribution pipe included on the approved plans; and

 

(2)  Provide to the department a map identifying the pipe section(s) observed and a certificate or letter indicating that the quality of the distribution pipe installation met the applicable AWWA installation standard and was consistent with the best practices in the industry.

 

          (g)  The certificate required by (f)(2), above, shall include:

 

(1)  The name and address of the owner or developer;

 

(2)  The name of the development and city or town in which it is located;

 

(3)  The name of the street and center line stationing for which the certificate applies;

 

(4)  The name of the contractor;

 

(5)  Pipe information including type, size, and cover depth;

 

(6)  The date(s) of the inspection(s) for the distribution pipe installation;

 

(7)  The inspector’s qualification pursuant to (d), above, which indicate expertise with pipe line installation and the applicable AWWA pipe installation standards; and

 

(8)  Confirmation that the results of the leakage test on the pipe did not exceed the leakage limits specified in the applicable AWWA pipe installation standards.

 

          (h)  Copies of the leakage test results for the entire water distribution system and the certificate and map as per (f), above, shall accompany the as-built plans or record drawings submitted pursuant to Env-Dw 405.33.

 

          (i)  Such certification shall not be required if the total length of new distribution piping installed is less than 250 feet.

 

          (j)  If the local legislative body of a political subdivision that owns a small community water system does not vote to approve funding for the requirements of this section and the requirements are not fully funded by the state, the department shall not require the political subdivision to comply with this section.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.32  Distribution System.

 

          (a)  All small community water supply systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  The water distribution piping system shall be capable of passing peak flow without excessive frictional loss.  At peak flow, pressure at the sill elevation of each lot or unit shall be at least 20 psi.  This determination shall be made at peak flow and when the atmospheric water storage tank is in a one-half empty condition.  Consideration shall be given to possible future expansion in the sizing and layout of the proposed water distribution piping system.

 

          (c)  Other requirements relative to water pressure shall include the following:

 

(1)  Where operational pressure is anticipated to be less than 30 psi, the service line shall be oversized so as to reduce frictional losses.  The water system owner shall inform each potential service customer of this low pressure before each unit is constructed;

 

(2)  Individual booster pumps to increase water pressure shall not be used on the service customer’s premises to maintain the required 20 psi minimum working pressure; and

 

(3)  Maximum system pressure shall be 100 psi.  Any portion of the water distribution piping system where pressure is expected to exceed 100 psi shall have pressure reducing valves installed on each individual water service line or on the water main to maintain pressure at less than 100 psi.  Any bypass line around a water main pressure reducer shall also have a pressure reducer.  The water system shall maintain all pressure reducing devices.

 

          (d)  The water distribution piping shall be so valved as to allow isolation of major sections of the water distribution piping system for repairs while still providing service to most of the water system.  The spacing for on-line gate valves installed on water mains shall not exceed every 1,500 feet.  Gate valves shall be provided at all intersecting pipes.

 

          (e)  Blow-offs shall be installed to allow flushing of the water distribution piping system near the ends of the water mains.  The size of the blow-off shall be such as to permit high velocities, at least 2.5 feet per second, to be developed in the water distribution piping.

 

          (f)  Where possible, dead-end piping shall not be used.  Near the temporary end of a water main, a gate valve shall be installed to allow future piping extension without shutting down the system or jeopardizing the health of existing consumers.

 

          (g)  Water distribution piping shall be bedded in sand or other appropriate material with a minimum cover of not less than 5 feet for year-round systems.

 

          (h)  If a water main and sewer pipe are to be installed adjacent to one another, a minimum horizontal separation of 10 feet shall be maintained.

 

          (i)  When conditions prevent 10 feet of separation, the following shall be considered by the water system:

 

(1)  Where other utilities or obstacles, not including bedrock, prevent such separation, a waiver shall be granted to allow location of the sewer pipe not less than 3 feet from a water main horizontally, provided that the water main is in a separate trench or on an undisturbed earth shelf located on one side of the sewer and at an elevation so the bottom of the water main is at least 18 inches above the top of the sewer pipe;

 

(2)  If a water main must cross a sewer pipe, the water main shall cross above the sewer pipe with not less than 18 inches of clear separation;

 

(3)  Water piping shall cross under sewer piping only when this is demonstrated to be unavoidable and only when granted by specific waiver.  Special construction, including use of ductile iron water and sewer pipe, no pipe joints within 9 feet of the crossing points, and minimum 18 inches clearance shall be required; and

 

(4)  Technical criteria supporting a waiver of sewer pipe and water main separation criteria include:

 

a.  The topography of the area; and

 

b.  The number of utility interferences.

 

          (j)  Piping and valving material and installation techniques shall conform with the appropriate AWWA specification, in accordance with Env-Dw 407, for that type of piping material where such specification exists.  Where such specification does not exist for the size pipe included in the system design, the minimum pressure rating for piping shall be 200 psi and the piping shall meet the manufacturing requirements of the American Society of Testing and Materials (ASTM) specification 2241, available as noted in Appendix B.

 

          (k)  Other utilities including but not limited to natural gas, storm drainage, electric, telephone, steam and cable television, shall not be installed within 3 feet of water mains.

 

          (l)  All buried non-metallic piping shall be backfilled with an effective metal tracing element located above the pipe approximately 6 inches below the finished grade.

 

          (m)  On-line gate valves and house service shut-offs shall be equipped with cast iron gate box extensions.  Gate valve boxes shall have cast iron covers clearly marked by the word “water” or other appropriate water supply marking and shall be installed flush with the finished grade.

 

          (n)  Rigid connections shall not be used to construct or repair water distribution piping systems.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.33  System Construction.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  No person shall construct a public water system until all required state and local approvals, including water system design approval, have been obtained.  If a portion of the water system is to be constructed at a later date, or phased with the actual growth of the development, this shall be indicated at the time of original submittal.

 

          (c)  Detailed measurements shall be made of the exact location of all buried water distribution piping and related service connections, gate valves, and blow-offs, and recorded on as-built plans or record drawings.

 

          (d)  The as built plans or record drawings of the water distribution piping system shall conform to the following conditions:

 

(1)  Precisely-measured dimensions to all on-line gate valves;

 

(2)  Precisely-measured dimensions to all blow-offs;

 

(3)  Precisely-measured dimensions to all house service shut-offs;

 

(4)  Precisely-measured dimensions to all house service taps to water mains;

 

(5)  Precisely-measured dimensions to all water distribution piping at approximately 200 foot intervals; and

 

(6)  Precisely-measured dimensions to any principal changes in pipe direction or size.

 

          (e)  For purposes of this section, “precisely measured” means of sufficient accuracy to locate the piping or appurtenance to within 1 foot accuracy, recorded to the nearest 0.5 foot.

 

          (f)  The water system owner shall file a copy of the as-built plan or record drawing of the water distribution piping system with dimensions noted with the department and with the entity that operates or will operate the water system.

 

          (g)  Flushing and chlorination of the water distribution piping system shall be required before use.  Before the final certified inspection, the entire water system, distribution pipes, storage tanks and pumps shall be flushed to remove any dirt or other contaminants, and then chlorinated at a concentration of 50 parts per million in accordance with the appropriate AWWA specification, as listed in Env-Dw 407.  After 24 hours, the system shall then be flushed again to remove all traces of chlorine and a water sample shall be taken from the end of the distribution system and analyzed for bacterial quality at a laboratory accredited for such test.

 

          (h)  The water system owner shall perform a leakage test of the piping system before system use.  The distribution system shall be checked for leakage by conducting a sustained pressure test for at least 2 hours, in accordance with the appropriate AWWA specification, as listed in Env-Dw 407.  Leakage shall not exceed the value given in AWWA specification C 600.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.34  Final Inspection.

 

          (a)  All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

 

          (b)  Upon completion of the construction of a public water system but before any service is offered, the department shall conduct a sanitary survey, or inspection, of the water system.  This inspection shall be performed within 5 working days after notification by the owner of the proposed water system that construction, including all required testing, is complete.  The water system shall not be approved for any service unless this inspection is completed.

 

          (c)  The proposed operator for a new public water system shall:

 

(1)  Have taken or arranged to take the operator certification exam as required under Env-Dw 502; and

 

(2)  Be in attendance at this inspection.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.35  Waivers.

 

          (a)  Small community water systems that have operated in compliance with all applicable requirements of subtitle Env-Dw for at least 12 months may apply to the department for a waiver of particular criteria.

 

          (b)  Waivers shall not be granted for criteria which pose a direct risk to public health, such as proper well construction, back-up wells where required, water quality standards, or the integrity of the water storage tank(s).

 

          (c)  Waivers shall be granted where the water system can document effective operation in its current configuration.

 

          (d)  Waiver requests for small community water systems shall be made in accordance with Env-Dw 202 and either Env-Dw 301 or Env-Dw 302.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

          Env-Dw 405.36  Expiration of Design Approvals.

 

          (a)  An approval for a proposed small community water system design shall expire 4 years after issuance if 50% or more of the proposed water distribution piping system and pumphouse has not been completed.

 

          (b)  Any water system that has completed 50% or more of the proposed water distribution piping system and pumphouse but has not started operation as of 4 years after the approval date shall comply with all then-current design criteria prior to start-up.

 

          (c)  A new design review fee and appropriate design revision shall be required for review and re-approval of lapsed designs.

 

          (d)  A new complete water quality test shall be required for each source for the appropriate parameters listed in Env-Dw 701 through Env-Dw 706 for re-approval of lapsed designs.

 

Source.  (See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14

 

PART Env-Dw 406  DESIGN STANDARDS FOR NON-COMMUNITY WATER SYSTEMS

 

Revision Note:

 

          Document #10613, effective 6-1-14, readopted with amendments and renumbered former Part Env-Ws 373 under a new subtitle as Part Env-Dw 406.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05. 

 

          The former Part Env-Ws 373 had last been filed under Document #8499, effective 11-30-05, which had adopted Part Env-Ws 373.  The rules in former Part Env-Ws 373 did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10613, effective 6-1-14.

 

          Env-Dw 406.01  Purpose; Authority.

 

          (a)  As required by RSA 485:8, all proposals to establish or expand a public water system shall be submitted to the department for review and approval before construction.

 

          (b)  The purpose of this part is to specify design criteria for non-community water systems.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.02  Applicability.

 

          (a)  Subject to (d), below, the rules of this part shall apply to non-community water systems as defined by RSA 485:1-a, X, which comprise:

 

(1)  Transient non-community water systems, which serve a transitory non-residential population without having fire protection provided by street hydrants, such as restaurants, motels, and campgrounds; and

 

(2)  Non-transient non-community (NTNC) water systems, which serve a regular but non-residential population such as schools, workplaces, and day care centers.

 

          (b)  Water systems serving residential populations, or a population greater than 1,000 persons, or having fire protection provided by street hydrants, shall be governed by the rules in in this chapter, Env-Dw 301, and Env-Dw 302, as applicable.

 

          (c)  Those NTNC water systems whose reliability is directly important to public health, such as schools or other facilities that are used as shelters during public emergencies, shall comply with the design criteria contained in Env-Dw 405 pertaining to the sizing of the water storage tanks and booster pumps, and other related appurtenances, as specified therein.

 

          (d)  Criteria that only apply to a particular type of non-community water system shall be as noted in each specific rule requirement.

 

          (e)  Existing non-community water systems that are proposed to be expanded shall comply with the design criteria of this part.

 

          (f)  Existing non-community water systems that are required by the department to make water system improvements, including new wells, shall comply with the design criteria of this part.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.03  Public Water System Capacity Assurance.  All proposed NTNC water systems shall comply with the requirements of Env-Dw 602 before the operation of such water system begins.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.04  Concept Approval for a Proposed Non-Community Water System.

 

          (a)  No well construction or water system design shall commence on a proposed non-community water system until a concept approval is issued by the department.

 

          (b)  The issuance of a concept approval for a proposed non-community water system shall be based on the following criteria:

 

(1)  Water service from another approved public water system is not available, determined based on the willingness of the potential provider to offer service and a comparison of the overall project cost to extend water service versus the overall project cost of constructing the proposed non-community water system;

 

(2)  The method of operation of the proposed non-community water system is adequate to ensure that all applicable requirements of subtitle Env-Dw are met;

 

(3)  The proposed non-community water system is consistent with state, regional, or local water resource/water supply management plans for the area;

 

(4)  The proposed non-community water system ownership and operation is consistent with other New Hampshire public utility commission (PUC) franchises in the area; and

 

(5)  The proposed water system will use the best feasible source of water available.

 

          (c)  For purposes of this section, the best feasible source of water shall be determined based on a comparison of alternatives based on project cost and other technical factors.  Such a comparison shall include capital and operational costs to provide an equivalent level of safe and reliable water supply service, for both domestic and fire flow needs, from an entity having adequate financial and managerial capability.

 

          (d)  Favorable criteria for the best source of water supply concept shall include:

 

(1)  Larger public water systems;

 

(2)  Public water systems that have full time employees who have higher levels of training and experience in the water works profession;

 

(3)  Public water systems with large volume water storage tank(s); and

 

(4)  Public water systems that have available equipment, controls, and communications that better ensure the reliability of operations and water quality.

 

          (e)  To request concept approval, the applicant shall submit a brief letter identifying the following:

 

(1)  The size of the proposed system;

 

(2)  The type of the proposed system;

 

(3)  The nature of the proposed system; and

 

(4)  A map specifically locating the proposed service area.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.05  Design Review Checklist.

 

          (a)  The person proposing to construct a new non-community water system or to expand or modify an existing non-community water system shall provide the following items to the department:

 

(1)  A completed application form as specified in (c), below, or a letter with the information specified in (c), below;

 

(2)  A copy of the concept approval obtained pursuant to Env-Dw 406.04;

 

(3)  A site plan of the project which includes the complete protective radius area surrounding each well;

 

(4)  The well driller’s well completion report for each well as required in We 800;

 

(5)  The water quality analysis of the water from each well as specified in Env-Dw 406.14;

 

(6)  A pumping test log for each well, if required by Env-Dw 406.13;

 

(7)  If water treatment is or is proposed to be provided, an operations and maintenance manual in accordance with Env-Dw 503; and

 

(8)  For a NTNC water system:

 

a.  A preliminary business plan in compliance with Env-Dw 602;

 

b.  A revised business plan in compliance with Env-Dw 602;

 

c.  A final business plan in compliance with Env-Dw 602; and

 

d.  Identification of the certified operator.

 

          (b)  For a proposed NTNC water systems whose reliability is directly important to public health as specified in Env-Dw 406.02(c), the applicant shall also submit the following:

 

(1)  Plans and specifications for the pumphouse and any water distribution system as specified in rules in Env-Dw 405;

 

(2)  An operation and maintenance manual in accordance with Env-Dw 503; and

 

(3)  A verification of any water distribution pipe installation in accordance with Env-Dw 405.31.

 

          (c)  The applicant shall provide the following information as required by (a)(1), above:

 

(1)  For existing water systems, the system’s PWS identification (ID) number;

 

(2)  The name and address, by street location and municipality, of the water system or proposed water system;

 

(3)  Whether the project is a proposed water system, a new well, or a modification to an existing water system;

 

(4)  The design flow, in gallons per day (gpd);

 

(5)  The number of residential units or equivalent units based on one unit being equivalent to 300 gpd;

 

(6)  Whether water quality testing has already been done, and if so, the sample identification numbers;

 

(7)  The amount of the design review fee calculated in accordance with Env-Dw 406.06;

 

(8)  The name, mailing address, and daytime telephone number of the project owner and, if the owner is other than an individual, the name of an individual who can be contacted regarding the application on behalf of the owner; and

 

(9)  The name, mailing address, and daytime telephone number of the project designer and, if the project has a design flow greater than 20,000 gpd, the professional engineer license number of the project designer.

 

          (d)  The applicant shall sign and date the form or letter required by (a)(1), above, to certify that the information provided is accurate.

 

          (e)  The plans and specifications for all proposed non-community water systems or modifications to existing non-community water systems having a design flow greater than 20,000 gpd shall be stamped by a professional civil or sanitary engineer licensed in the state of New Hampshire.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.06  Design Review Fee.

 

          (a)  As specified in RSA 485:8, III, the applicant shall pay an application fee for the review of:

 

(1)  A proposed non-community water system; or

 

(2)  The modification of an existing transient non-community water system to include residential-type use.

 

          (b)  The fee shall be determined as follows:

 

(1)  For proposed residential-type units, the fee shall be as stated in RSA 485:8, III per unit, regardless of the size of the residential units;

 

(2)  For proposed non-residential units, the fee shall be determined by conversion of the water system design flow to a residential-equivalent unit basis.  For purposes of this rule, a “residential-equivalent unit” means a design flow of 300 gpd;

 

(3)  The design flow for non-residential units shall be as specified in Env-Dw 406.08 or Env-Wq 1008;

 

(4)  The fee for each residential-equivalent unit shall be as stated in RSA 485:8, III.  The calculated fee for non-residential systems shall be determined by rounding off to the nearest full residential-equivalent unit;

 

(5)  In determining the number of units the water system is designed to accommodate, the department shall use system design parameters, proposed plans for additional construction, and other factors bearing on the ultimate design flow for the water system;

 

(6)  The department shall presume that any application for expansion within 2 years of the initial submittal is part of the initial water system design and therefore subject to the design review fee;

 

(7)  If the design flow of a non-residential public water system is less than one-half of a residential equivalent unit, the fee shall be zero dollars;

 

(8)  The maximum fee shall be based on 175 units or equivalent residential units; and

 

(9)  No additional fee shall be charged for revised submissions which do not include additional units, or for submissions requesting an extension or expansion of an existing non-community water system if more than 2 years after the original approval.

 

          (c)  The design review fee shall be paid in conjunction with the final design review submittal.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.07  Plans.

 

          (a)  Design documents shall provide adequate information to analyze the expected system performance and serve as a detailed permanent record for future owners, maintenance personnel, and the department.

 

          (b)  All water system plans to be submitted to the department by or on behalf of the water system owner shall be:

 

(1)  Prints or copies of original drawings, with no original drawings or line work and no highlighting unless existing line work is traced;

 

(2)  On paper that is 24 inches by 36 inches;

 

(3)  For site plans, drawn to a scale no greater than 1 inch equals 60 feet; and

 

(4)  For architectural plans, drawn to the scale of 1 foot equals 1/4 inch or 1 foot equals 3/8 inch.

 

          (c)  The plans and other documents shall be neat, fully detailed, and drawn to scale.  All lettering shall be neatly printed or mechanically or electronically set.

 

          (d)  The project plan(s) shall include the following items:

 

(1)  A location key or locus plan, which shall:

 

a.  Be not less than 3 inches by 3 inches;

 

b.  Be on a scale equal to the latest United States Geological Survey (USGS) scale, 1 inch being equal to 2,000 feet, if available; and

 

c.  Identify street names and other principal features;

 

(2)  A title block, which shall include the following:

 

a.  The name of the project, its location, and the design date;

 

b.  The name, mailing address, and daytime phone number of the owner;

 

c.  The name, mailing address, and daytime phone number of the system designer;

 

d.  The scale used; and

 

e.  Space for noting the date(s) of any subsequent plan revisions;

 

(3)  A site plan, which shall be drawn to a scale in the range of 1 inch being equal to 20 feet to 1 inch being equal to 50 feet and show or identify the following:

 

a.  Property boundaries, the name of each adjacent owner, and the ultimate scope of the project;

 

b.  All roads, existing and proposed wastewater disposal areas, green areas, north arrow, lot numbers, and property lines;

 

c.  The water distribution piping system including:

 

1.  Pipe size, location, and material;

 

2.  Gate valves and blow-offs; and

 

3.  A typical trench section showing depth of cover and bedding material; and

 

d.  Elevation contours at not less than 5 foot intervals; and

 

(4)  For campgrounds and other transient non-community water systems which have water distribution piping systems, a water distribution system plan.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.08  Design Flow.

 

          (a)  Subject to (b), below, anticipated design flows for a proposed non-community water system, based on the type of use, shall be as determined in Table 406-1 below:

 

Table 406-1: Anticipated Design Flows

 

Type of Use

Design Flow

Institutions other than hospitals

135 gpd per bed

Golf Club

20 gpd per locker

Bed & Breakfast

60 gpd per bedroom

Shopping center/stores

5 gpd per 100 square feet (sq.ft.)

Hospitals

200 gpd per bed

Campground with 3-way hook-up

90 gpd per site

Campground with central comfort station

75 gpd per site

Motel/Hotel

50 gpd per person, calculated at 4 persons per room

School with gym and cafeteria

25 gpd per student

Factory - sanitary use only

20 gpd per worker

Restaurant

40 gpd per seat

Lounge

20 gpd per seat

Office space

15 gpd per person or 15 gpd/100 sq. ft.

 

          (b)  If the specific type of use is not listed above, the design flow shall be determined in accordance with Env-Wq 1008.

 

          (c)  For non-community water systems that are being expanded or upgraded, the design flow shall be determined either in accordance with (a) and (b), above, or by using historical water readings in accordance with one of the following:

 

(1)  By finding the daily average flow from water meter readings and multiplying the average by a minimum factor of 2 or a maximum factor of 3 depending on the type or frequency of the meter readings; or

 

(2)  By examining 12 months of consecutive daily water meter readings, in which case, the water system’s design flow shall be based on the highest daily flow noted, without application of a multiplying factor.

 

          (d)  Since the design flows contained in Table 406-1 and Env-Wq 1008 do not include exterior water use, for those water systems where watering lawns and gardens, filling swimming pools, or other high water use demands are expected, the total design flow for the water system shall be increased accordingly.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.09  Acceptable Sources of Water Supply.

 

          (a)  Surface water shall not be used as a source by any non-community water system.

 

          (b)  Where the residential-equivalent units exceed 45, a minimum of 2 wells shall be required.

 

          (c)  If connection to a municipal water system is proposed, the applicant shall submit a letter of confirmation to the department from the supplying water system owner which states that:

 

(1)  Adequate quantities of water are available to serve the proposed water system; and

 

(2)  With the proposed water system on line, adequate system pressures will be maintained.

 

          (d)  Design criteria for municipal water system piping extensions shall be as specified in Env-Dw 404.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.10  Required Source Capacity.

 

          (a)  The required minimum total source capacity for non-community water systems shall be not less than 1.5 times the design flow for the water system based on a 24-hour day.

 

          (b)  Since the design flows contained in Table 406-1 and Env-Wq 1008 do not include exterior water use, for those water systems where watering lawns and gardens, filling swimming pools, or other high water use demands are to be expected, additional source capacity for these uses shall be provided.

 

          (c)  For those NTNC water systems whose reliability is directly important to public health as outlined in Env-Dw 406.02(c) that are required to have 2 or more wells, the minimum total permitted production volume with the largest source out of service shall be equal to or greater than 50% of the system’s design flow.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.11  Well Location.

 

          (a)  Non-community water system wells shall be located at least 50 feet from surface waters, wetlands, and natural drainage ways.

 

          (b)  The wellhead shall be above the 100-year flood level, provided, however, that where wells must be located within a floodway, the area immediately surrounding the well and pumphouse shall be built up above the 100-year flood elevation.

 

          (c)  Non-community water system wells shall be kept at least 50 feet from the edge of road right-of-ways, driveways, and parking areas to minimize contamination from de-icing salts.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.12  Sanitary Protective Area and Permitted Production Volume for Groundwater Sources.

 

          (a)  To protect the long-term quality of each public water system, a sanitary protective area shall be established around each groundwater source and a permitted production volume shall be assigned to the source based on the size of the sanitary protective area established.  The sanitary protective area shall be a circle with a specified radius, centered on the well.

 

          (b)  The permitted production volume shall not be greater than the source capacity based on a 24 hour period defined by the pumping test in accordance with Env-Dw 406.13 or the well driller’s well completion report.

 

          (c)  The sanitary protective area, based on the permitted production volume established by the system, shall be as shown in Table 406-2 below.

 

Table 406-2: Sanitary Protective Area

 

Permitted Production Volume (gpd)

Sanitary Protective Radius Length (ft.)

0 - 750

75

751 - 1440

100

1441 - 4320

125

4321 - 14,400

150

14,401 - 28,800

175

28,801 - 57,600

200

57,601 - 86,400

250

86,401 - 115,200

300

115,201 - 144,000

350

Greater than 144,000

400

 

          (d)  When more than one well is inside another well’s sanitary protective area, then the individual sanitary protective areas for the wells shall be based on their combined permitted production volume unless the applicant demonstrates through hydrogeological means that these wells are not interconnected.

 

          (e)  The following land uses shall be specifically excluded from within the sanitary protective areas of non-community water systems:

 

(1)  Wastewater disposal systems, including septic tanks, grease traps, and effluent disposal areas;

 

(2)  Soil fertilization areas;

 

(3)  Nitrate set-back areas;

 

(4)  Dumpsters;

 

(5)  Detention ponds or infiltration basins;

 

(6)  Storage tanks for oil, gasoline, propane, or natural gas, or other hazardous chemicals; and

 

(7)  Any uses associated with hazardous materials.

 

          (f)  Acceptable uses of the sanitary protective area for non-community water systems shall include those uses listed below:

 

(1)  Roadways, with the exception of the required setback in Env-Dw 406.11(c);

 

(2)  Parking lots, with the exception of the required setback in Env-Dw 406.11(c);

 

(3)  Tennis courts;

 

(4)  Surface water such as lakes, rivers, and streams;

 

(5)  Permanently protected or undevelopable land;

 

(6)  Wastewater piping which passes within the sanitary protective area only if:

 

a.  The type of pipe is ductile iron or approved equal pressure-type pipe that is tested for water-tight construction after installation; and

 

b.  All wastewater piping is located a minimum distance of the greater of 50 feet or a distance equal to at least one-half the total amount of the well radius length from the well;

 

(7)  Pumphouse and permanent buildings; and

 

(8)  Other compatible uses proposed in writing to the department by the water system owner if the submittal demonstrates that:

 

a.  The type(s) and volume(s) of contaminant(s) associated with the activity, when subject to any best management practices proposed by the owner, will not pose a threat to water quality;

 

b.  The owner has a contaminant mitigation plan that will prevent the contaminant(s) from rendering the water unfit for use by the water system; and

 

c.  The overall risk of groundwater contamination is outweighed by the benefit expected from the activity.

 

          (g)  The NTNC water system’s potential for future waivers from a portion of its chemical monitoring requirements shall be diminished by the location of buildings, roadways, parking lots, and other such construction within the well’s protective radius.

 

          (h)  For non-community water systems, the water system owner shall control the sanitary protective area.  The water system owner shall, where possible, locate the well and sanitary protective area entirely on the property owned by the water system.  Once established, the sanitary protective area shall not be subdivided.  Where the sanitary protective area cannot be located fully on the property owned by the water system, written legal easements from abutters shall be obtained.  Such easements shall specifically exclude the uses described in (e), above, from the area within the sanitary protective area.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.13  Pumping Tests.

 

          (a)  For all non-community water systems having a design capacity of 13,500 gpd or greater, the water system owner shall demonstrate adequate source capacity by a sustained 48-hour pumping test at a constant rate before final plans can be approved.  The pumping test shall demonstrate stabilized drawdown for at least the last 12 hours of the test.  Stabilization is defined as a drawdown of less than one inch in 2 hours.  If stabilization is not achieved, the pumping test shall continue and the department shall be contacted.

 

          (b)  The water system owner shall submit data documenting the pumping test on a pumping test log sheet that includes the following items:

 

(1)  Well depth, in feet;

 

(2)  The date of the pumping test;

 

(3)  The pumping rate, in gallons per minute (gpm);

 

(4)  The level of water in the well prior to pumping in feet below top of casing;

 

(5)  The drawdown level during pumping, in feet below top of casing; and

 

(6)  The time the test was initiated and concluded and the total hours of the test.

 

          (c)  Each log sheet shall be identified by project name, well number or name, location, and submittal date.

 

          (d)  Readings for water level and pumping rate shall be taken at least every hour so long as the change in drawdown exceeds 2 feet per hour.  Thereafter, readings may be taken at appropriate intervals not to exceed 4 hours.  Readings shall be direct measurements and not inferred from pump curves or other inferential methods.

 

          (e)  Where wells are within 150 feet of each other, the pumping tests shall be run simultaneously.

 

          (f)  For any proposed non-community water system well where a pumping test is not conducted, the well driller shall provide a signed statement of the well’s projected safe yield to the department.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.14  Water Supply Quality.

 

          (a)  Prior to the end of the pumping test, the water system owner shall take a water sample from each source and have the sample analyzed for quality by a laboratory accredited for the analysis requested.  Results from unaccredited laboratories shall not be accepted.  Samples shall be taken after the well has been flushed and near the completion of any pumping test or other means for determining the well’s projected safe yield.  Dip samples from wells shall not be acceptable.

 

          (b)  Special containers and sampling techniques shall be required for those sources which will supply non-community water systems as specified in Env-Dw 707.

 

          (c)  Water quality for NTNC water systems shall meet the applicable standards established in Env-Dw 707 or shall be capable of meeting these standards with approved treatment.  The submitted analysis shall have been performed within the previous 6 months by a state certified water lab.

 

          (d)  Proposed transient non-community water systems shall sample for:

 

(1)  Arsenic;

 

(2)  Bacteria;

 

(3)  Chloride;

 

(4)  Copper;

 

(5)  Fluoride;

 

(6)  Hardness;

 

(7)  Iron;

 

(8)  Lead;

 

(9)  Manganese;

 

(10)  Nitrate/Nitrite;

 

(11)  pH; and

 

(12)  Sodium.

 

          (e)  Subject to (f), below, the water system owner shall submit results of laboratory analyses to the department as originals or photostatic copies of the original laboratory report.  Re-typing or re-writing the data shall not be acceptable.

 

          (f)  The water system owner may have the results submitted directly to the department by the laboratory.  If the laboratory submits results directly, the results shall be submitted in the same format as results on existing water systems.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.15  System Concept.

 

          (a)  If limited fire protection service is to be provided, the following water system design criteria shall be observed:

 

(1)  When fire hydrants are planned by the water system owner, a separate water storage tank shall be installed and the fire hydrants shall connect to only this water storage tank.  The re-fill pipe for this water storage tank shall incorporate an air gap.  There shall be no connection between the domestic water system and the fire storage tank; and

 

(2)  Where sprinklers are planned to be installed within the premises to be served by the water system, the service line and domestic plumbing shall be appropriately increased in size.  The service line shall be sized to accommodate a design flow rate specified in the state fire code, Saf-C 6000.  The sprinkler portion of the piping shall be separated from the domestic plumbing by at least a testable double check valve.

 

          (b)  Additional provisions for source capacity and storage facilities in the water system’s design shall be made to accommodate fire flows.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.16  Pumphouse Design and Construction.

 

          (a)  Pumphouses shall have screened gravity floor drains or equivalent with all floors pitched Ľ-inch per foot toward the drains.  Sump pumps shall not be acceptable.  The drain pipes shall not discharge to any surface water and shall be screened at the discharge end to prevent small animals or insects from blocking flow.  The pumphouse floor level shall be above the seasonal high water table.

 

          (b)  The layout of equipment and the design of the pumphouse shall provide for convenient operation and preventative maintenance.  The design and materials shall include provisions to minimize vandalism damage to wells, doors, and roofs.  Windows shall be avoided.  The pump station walls and ceilings shall be fully insulated.  Construction materials shall be highly resistant to moisture, decay, and vandalism.

 

          (c)  For all proposed pumphouses, the applicant shall make every reasonable effort to design and construct the pumphouse at finished grade.  Where constraints are encountered, the station may be as much as 5 feet below grade.  If the floor of the pumphouse is below grade, the design shall address the confined space rules of the U.S. Department of Labor, Occupational and Health Administration (OSHA) as specified in 29 CFR 1910.146.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.17  Pumps and Auxiliary Equipment.

 

          (a)  All non-community water systems serving campgrounds shall have a water meter installed on each incoming source line before the water enters the storage tank(s).

 

          (b)  For all non-community water systems, a pressure gauge shall be provided.  Gauges shall be installed with gauge cocks for isolation and of suitable range for the expected pressure range.

 

          (c)  For all non-community water systems, the pump controls shall have a manual “off/on/auto” switch to control pump operations where water is pumped into a vented tank or the equivalent.  Where the water is pumped into a pressure system, a pressure relief valve or spring-loaded “on” switch shall be provided.

 

          (d)  Where an air compressor is provided for air which will be in direct contact with drinking water, the air compressor shall be of the oil-less type.

 

          (e)  Mercury-type float switches shall not be in direct contact with drinking water, and shall, if present, be removed and replaced.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.18  Well Appurtenances and Pump Installation.

 

          (a)  No well installed after June 4, 1997 shall be placed inside a pumphouse or building being served by the water system.

 

          (b)  Well casings shall project at least one foot above finished grade.

 

          (c)  For bedrock wells installed prior to June 4, 1997 that are inside a pumphouse where the floor is below finished grade, the well casing shall extend above the finished floor at least 2 feet.

 

          (d)  A tight seal shall be provided around all entry ports into the well.  Provisions shall be made to allow the removal of well pump for repair.

 

          (e)  All well sources at all non-community water supply systems shall be capable of being separately sampled for water quality before entering storage tank(s).

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.19  Appurtenances and Installation of Storage Tanks.

 

          (a)  All water storage tanks at all non-community water systems shall have drains.  All water storage tanks installed outdoors shall be totally backfilled to minimize damage to the tank coating.  Water storage tanks shall be located above the seasonal high ground water table to prevent possible flotation when empty.  Proposals to bury the water storage tank into or below the water table shall not be accepted.

 

          (b)  All atmospheric water storage tanks shall have a downward-turned "U" vent with fine mesh screening to prevent the entry of small living things such as insects, small animals, and birds.

 

          (c)  All buried steel water storage tanks shall be installed in accordance with current industry practice and be provided with an adequate underdrain system to assure that the seasonal high ground water table remains below the bottom of the water storage tanks, and have a protective coating inside and out.  The interior coating shall be certified as being manufactured and applied in accordance with the approved listings in Env-Dw 403.  Damage to the exterior coating during construction shall be repaired prior to tank backfill.

 

          (d)  All water storage tanks larger than 500 gallons and installed after January 1, 1996 shall have a name plate identifying the following:

 

(1)  Year of manufacture;

 

(2)  Size; and

 

(3)  Pressure rating.

 

          (e)  Atmospheric water storage tanks shall be equipped with a capped filler pipe, which shall be lockable if located on the exterior of the tank, to accommodate tank truck water delivery.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.20  Water Treatment Facilities.

 

          (a)  Water treatment processes at non-community water systems shall:

 

(1)  Maximize the effectiveness of treatment;

 

(2)  Have sufficient controls and monitors to identify treatment performance and aid in operation;

 

(3)  Support reliability and flexibility of operations;

 

(4)  Have low capital and operational costs;

 

(5)  Be easily repaired; and

 

(6)  Be sized and configured consistent with the practices and standards of the professional water treatment industry.

 

          (b)  Each water system owner who wishes to install or modify a treatment process shall submit the following to the department in writing:

 

(1)  The name, location, and PWS ID number of the system;

 

(2)  The name, mailing address, and daytime telephone number of an individual who is knowledgeable about the proposed treatment process who can answer questions about the proposal on behalf of the owner;

 

(3)  A description of the proposed treatment process, including how the process functions conceptually;

 

(4)  A technical design proposal which identifies necessary equipment, chemicals, plumbing, and electrical elements, as specified in Env-Dw 406.21;

 

(5)  A description of the anticipated treatment wastes and their disposal, in accordance with Env-Dw 406.22;

 

(6)  An operation and maintenance manual, as specified in Env-Dw 406.23; and

 

(7)  A monitoring plan for determining the quality of the treated water and waste flows, as specified in Env-Dw 406.24.

 

          (c)  The documents specified in (b)(1) through (b)(5) above, shall be submitted concurrently to the department.

 

          (d)  The department shall approve the water treatment process application if the department determines that the proposal meets the criteria specified in (a), above, and any item-specific criteria listed in Env-Dw 406.21 through Env-Dw 406.24.

 

          (e)  The department shall inform the applicant of its decision in writing.  If the decision is to not approve the proposal, the decision shall specify the reason(s) for the non-approval.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.21  Technical Design Proposal Criteria.  The technical design proposal required by Env-Dw 406.20(b)(4) shall:

 

          (a)  Identify the water treatment process to be used and the equipment to be installed;

 

          (b)  Describe the chemical(s), plumbing, and electrical control modifications that represent a complete treatment process;

 

          (c)  Include a tabular summary of laboratory sampling results analyzed by a New Hampshire accredited laboratory which identifies:

 

(1)  The contaminant(s) to be modified by the treatment process; and

 

(2)  All other water quality factors, by name and concentration, that are predicted to be modified by the treatment process;

 

          (d)  Describe the expected water quality change by the water treatment process, including:

 

(1)  The concentration of the target contaminant at normal and peak production rates; and

 

(2)  The concentrations of all other affected water quality parameters at normal and peak production rates;

 

          (e)  Identify the configuration of all components of the treatment process including:

 

(1)  The rationale for a series or parallel configuration;

 

(2)  The number of trains of equipment; and

 

(3)  A description of each pretreatment process;

 

          (f)  Describe the design goal of the treatment process, as follows:

 

(1)  Removal of the contaminant(s) to de minimis levels; or

 

(2)  A reduction of the contaminant so as to achieve compliance with the maximum contaminant level(s) or the maximum contaminant level goals specified in Env-Dw 702 through Env-Dw 706;

 

          (g)  Identify the criteria used for each treatment component of the process, as appropriate, including:

 

(1)  The loading rate;

 

(2)  The detention time or empty bed contact time;

 

(3)  The backwash or regeneration flow rate required; and

 

(4)  The concentration of target contaminant selected to control the end of the treatment cycle;

 

          (h)  Require a sampling tap to be installed between each treatment component of the treatment process and identify plumbing appurtenances throughout the treatment sequence, including:

 

(1)  Connecting pipe size, gate valves, check valves, unions, and bypasses;

 

(2)  Meter(s) and their type including whether indicating, totalizing or recording; and

 

(3)  Flow restrictors and their rating;

 

          (i)  Identify measuring, control, and communication/alarm equipment including:

 

(1)  Chemical feed pump pacing method and associated equipment;

 

(2)  Flow switch interrupt of chemical feed equipment when there is no production flow; and

 

(3)  Other automatic monitoring and communication devices; and

 

          (j)  For each treatment chemical to be used:

 

(1)  Identify the chemical and the anticipated concentration(s) to be used during both the initial start-up phase and the operational phase, if different; and

 

(2)  Include the following information:

 

a.  Documentation that the chemical is approved for drinking water use in accordance with American National Standards Institute (ANSI) standard 60 as required in Env-Dw 403; and

 

b.  A copy of the material safety data sheet (MSDS) for that chemical.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.22  Disposal of Treatment Wastes in the Technical Design Proposal.  The proposal for disposal of treatment wastes and by-products required by Env-Dw 406.20(b)(5) shall:

 

          (a)  Identify the volume and strength of treatment wastes and by-products expected to be generated;

 

          (b)  Identify whether the expected treatment wastes or by-products are hazardous and cite the applicable rule(s);

 

          (c)  Identify the state agency having jurisdiction over the treatment wastes or by-products;

 

          (d)  Identify the method(s) proposed to dispose of the treatment wastes or by-products; and

 

          (e)  Estimate the annual cost of waste disposal.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.23  Operation and  Maintenance Manual.

 

          (a)  The builder of the public water system shall prepare an operation and maintenance manual for the water system owner to submit to the department.

 

          (b)  The manual shall be bound so as to provide a permanent document for the water system owner and a ready reference for the water system operator.

 

          (c)  The operation and maintenance manual shall include:

 

(1)  A schematic drawing of the treatment process, which shall identify each unit of the treatment equipment by:

 

a.  Type;

 

b.  Size;

 

c.  Model number; and

 

d.  Any appurtenances;

 

(2)  An original or a photocopy of the description of the treatment equipment from the manufacturer’s catalogue;

 

(3)  A separate schematic drawing of the treatment process in the normal production configuration, which shall include:

 

a.  A written description of the process, which shall reference the schematic drawing and show flow direction; and

 

b.  The approximate expected values, settings or feed rates for pumps, gauges, gate valves and controllers in the production mode;

 

(4)  A separate schematic drawing of the treatment process in the normal backwash or regeneration configuration, which shall include:

 

a.  A written description which references the schematic drawing, showing the backwash or regeneration process functions which shall include:

 

1.  The flow rate of backwash or regeneration and its temperature dependency where applicable;

 

2.  The duration of backwash or regeneration; and

 

3.  The frequency of anticipated backwashes or regenerations; and

 

b.  The approximate expected values, settings, or feed rates for pumps, gauges, gate valves and controllers in the backwash mode;

 

(5)  Recommended short- and long-term maintenance schedules for each piece of equipment;

 

(6)  A description of common operational problems and proposed corrective operator responses;

 

(7)  A description of how the operator can maximize the efficiency of the treatment process relative to:

 

a.  Energy use;

 

b.  Chemical use;

 

c.  Maximizing the net treated water production volume;

 

d.  Minimizing the volume of waste and by-products produced; and

 

(8)  A blank copy of the compliance and oversight operational form that is required by Env-Dw 503 to be submitted to the department when a water system performs treatment.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.24  Water Quality Monitoring Plan.  The water quality monitoring plan required by Env-Dw 406.20(b)(7) shall:

 

          (a)  Identify appropriate raw water test parameters and sampling frequencies;

 

          (b)  Identify appropriate finished water test parameters and sampling frequencies;

 

          (c)  Include any proposed modifications to the finished water sampling schedules once a data record is established showing the consistency and reliability of the treatment process; and

 

          (d)  Identify the treated water safety factor, as specified in Env-Dw 708, for changing sampling frequencies.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.25  Water Pressure; Distribution System.

 

          (a)  Where operational pressure is anticipated to be less than 30 pounds per square inch (psi), the service line shall be oversized so as to reduce frictional losses.

 

          (b)  Maximum system pressure shall be 100 psi.  Any portion of the water distribution piping system where pressure is expected to exceed 100 psi shall have pressure reducing valves installed on each individual water service line or on the water main to maintain pressure at less than 100 psi.  Any bypass line around a water main pressure reducer shall also have a pressure reducer.  The water system shall maintain all pressure reducing devices.

 

          (c)  For non-community water systems serving campgrounds, the following shall apply:

 

(1)  The water distribution piping system shall be capable of passing peak flow without excessive frictional loss, such that at peak flow, pressure at each lot or site shall be at least 20 psi;

 

(2)  Consideration shall be given to possible future expansion in the sizing and layout of the proposed water distribution piping system;

 

(3)  The water distribution piping system shall be so valved as to allow isolation of major sections of the water distribution piping system for repairs while still providing service to most of the water system;

 

(4)  The spacing for on-line gate valves installed on water mains shall not exceed every 1,500 feet, and gate valves shall be provided at all intersecting pipes;

 

(5)  Blow-offs shall be installed to allow flushing of the water distribution piping system near the ends of the water mains, and shall be sized so as to permit high velocities, at least 2.5 feet per second, to be developed in the water distribution piping;

 

(6)  Where possible, dead-end piping shall not be used.  Near the temporary end of a water main, a gate valve shall be installed to allow future piping extension without shutting down the system or jeopardizing the health of existing consumers;

 

(7)  Water distribution piping shall be bedded in sand or other appropriate material with a minimum cover of not less than 5 feet for year-round systems;

 

(8)  Piping and valving material and installation techniques shall conform with the appropriate American Water Works Association (AWWA) specification, in accordance with Env-Dw 407, for that type of piping material where such specification exists.  Where such specification does not exist for the size pipe specified in the system design, the minimum pressure rating for piping shall be 200 psi and the piping shall meet the manufacturing requirements of the American Society of Testing and Materials (ASTM) specification 2241, available as noted in Appendix B; and

 

(9)  All buried non-metallic piping shall be backfilled with an effective metal tracing element located above the pipe approximately 6 inches below the finished grade.

 

          (d)  Subject to (e), below, if a water main and sewer pipe are to be installed adjacent to one another, a minimum horizontal separation of 10 feet shall be maintained.

 

          (e)  When conditions prevent 10 feet of separation, the following shall be considered by the water system:

 

(1)  Where other utilities or obstacles, not including bedrock, prevent such separation, a waiver may be requested to allow location of the sewer pipe not less than 3 feet from a water main horizontally, provided that the water main is in a separate trench or on an undisturbed earth shelf located on one side of the sewer and at an elevation so the bottom of the water main is at least 18 inches above the top of the sewer pipe;

 

(2)  If a water main shall cross a sewer pipe, the water main shall cross above the sewer pipe, with not less than 18 inches of clear separation;

 

(3)  Water piping may cross under sewer piping only when this is demonstrated to be unavoidable and only when granted by specific waiver.  Special construction, including use of ductile iron water and sewer pipe, no pipe joints within 9 feet of the crossing points, and minimum 18 inches clearance shall be required; and

 

(4)  Technical criteria supporting a waiver of sewer pipe and water main separation criteria shall include:

 

a.  The topography of the area; and

 

b.  The number of utility interferences.

 

          (f)  Other utilities, including, but not limited to natural gas, storm drainage, electric, telephone, steam, and cable television, shall not be installed within 3 feet of water mains.

 

          (g)  On-line gate valves and service shut-offs shall be equipped with cast iron gate box extensions.  Gate valve boxes shall have cast iron covers clearly marked by the word “water” or other appropriate water supply marking and shall be installed flush with the finished grade.

 

          (h)  Rigid connections shall not be used to construct or repair water distribution piping systems.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.26  System Construction.

 

          (a)  No person shall construct a public water system until all required state and local approvals, including water system design approval, have been obtained.  If a portion of the water system is to be constructed at a later date, or phased with the actual growth of the development, this shall be indicated at the time of original submittal.

 

          (b)  For non-community water systems serving campgrounds, detailed measurements shall be made of the exact location of all buried water distribution piping and related service connections, gate valves, and blow-offs, and recorded on as-built plans or record drawings.

 

          (c)  As-built plans or record drawings of the water distribution piping system shall conform to the following conditions:

 

(1)  Precisely-measured dimensions to all on-line gate valves;

 

(2)  Precisely-measured dimensions to all blow-offs;

 

(3)  Precisely-measured dimensions to all house service shut-offs;

 

(4)  Precisely-measured dimensions to all house service taps to water mains;

 

(5)  Precisely-measured dimensions to all water distribution piping at approximately 200 foot intervals; and

 

(6)  Precisely-measured dimensions to any principal changes in pipe direction or size.

 

          (d)  For purposes of this section, “precisely-measured” means of sufficient accuracy to locate the facility or appurtenance to within 1 foot accuracy, recorded to the nearest 0.5 foot.

 

          (e)  The water system owner shall file a copy of the as-built plan or record drawing of the water distribution piping system with dimensions noted with the department and with the entity that operates or will operate the water system.

 

          (f)  For non-community water systems serving campgrounds, the water system owner shall perform a leakage test of the buried water distribution piping system before system use.  The water distribution piping system shall be checked for leakage by conducting a sustained pressure test for at least 2 hours, in accordance with the appropriate AWWA specification listed in Env-Dw 407.  Leakage shall not exceed the value given in the appropriate AWWA specification listed in Env-Dw 407.

 

          (g)  For all non-community water systems, flushing and chlorination of the water distribution piping system shall be required before use.  Before the final inspection, the entire water system, distribution pipes, water storage tanks and pumps shall be flushed to remove any dirt or other contaminants, and then chlorinated at a concentration of 50 parts per million in accordance with the appropriate AWWA specification listed in Env-Dw 407.  After 24 hours, the system shall then be flushed again to remove all traces of chlorine and a water sample shall be taken from the end of the distribution system and analyzed for bacterial quality at a laboratory accredited for such test.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.27  Final Inspection.

 

          (a)  Upon completion of the construction of a non-community water system, but before any service is offered, the department shall conduct a sanitary survey, or inspection, of the water system.  This inspection shall be performed within 5 working days after notification by the owner of the proposed water system that construction, including all required testing, is complete.  The water system shall not be approved for any service unless this inspection is completed.

 

          (b)  The proposed operator for a new NTNC water system shall:

 

(1)  Have taken or arranged to take the operator certification exam as required under Env-Dw 601; and

 

(2)  Be in attendance at the inspection required under (a), above.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

          Env-Dw 406.28  Waivers.

 

          (a)  Non-community water systems that have operated in compliance with all applicable requirements of subtitle Env-Dw for at least 12 months may apply to the department for a waiver of particular design criteria.

 

          (b)  Waivers shall not be granted for criteria which pose a direct risk to public health such as proper well construction, back-up wells where required, water quality standards, or the integrity of water storage tank(s).

 

          (c)  Waivers shall be granted where the water system can document effective operation in its current configuration.

 

          (d)  Waiver requests for non-community water systems sanitary protective area shall be submitted by the water system owner as follows:

 

(1)  All requests for waivers shall be submitted as specified in Env-Dw 202 and shall be signed by the water system owner and the water system’s designer; and

 

(2)  The request shall include information on technically-important factors for a waiver of the sanitary protective area such as historical water quality, if applicable, overburdened soil depth, soil type, height and consistency of water table, and direction of slope.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

            Env-Dw 406.29  Expiration of Design Approvals.

 

            (a)  An approval for a proposed non-community water system design shall expire 4 years after issuance if 50% or more of the proposed water distribution piping system and pumphouse has not been completed.

 

            (b)  Any water system that has completed 50% or more of the proposed water distribution piping system and pumphouse but has not started operation as of 4 years after the approval date shall comply with all then-current design criteria prior to start-up.

 

            (c)  A new design review fee and appropriate design revision shall be required for review and re-approval of lapsed designs.

 

            (d)  A new complete water quality test shall be required for each source for the appropriate parameters listed in Env-Dw 702 through Env-Dw 706 for re-approval of lapsed designs.

 

Source.  (See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14

 

PART Env-Dw 407  STANDARDS ADOPTED BY REFERENCE

 

Revision Note:

 

            Document #10614, effective 6-1-14, readopted with amendments and renumbered former Part Env-Ws 307 under a new subtitle as Part Env-Dw 407.  The redesignation from subtitle Env-Ws to subtitle Env-Dw was done pursuant to a rules reorganization plan for Department rules approved by the Director of the Office of Legislative Services on 9-7-05. 

 

            The former Part Env-Ws 307 had last been filed under Document #8498, effective 11-30-05.  The rules in former Part Env-Ws 307 did not expire on 11-30-13 since they were extended pursuant to RSA 541-A:14-a until replaced by the rules in Document #10614, effective 6-1-14.

 

            Document #10614 replaces all prior filings for the rules formerly in Env-Ws 307.  The prior filings for rules in the former Env-Ws 307, beginning with Document #6521, effective 6-4-97, which had readopted with amendments the entire Chapter Env-Ws 300, include the following documents:

 

            #6521, eff 6-4-97

            #8360, INTERIM, eff 6-4-05

            #8498, eff 11-30-05

 

            Env-Dw 407.01  Standards of the American Water Works Association.

 

            (a)  The quality, materials and workmanship standards specified in table 407-1, available as noted in Appendix B, shall apply to all public water systems relative to construction, operation, and maintenance activities regulated by Env-Dw 300 and Env-Dw 401 through Env-Dw 406:

 

Table 407-1

Standards of the American Water Works Association

 

STANDARD CATEGORY
     Subcategory (if any)

            Number

Edition

Title of Standard

SOURCE

 

 

            A100

1997

Water Wells

TREATMENT

 

 

     Filtration

 

 

            B100

2001

Filtering Material

            B101-01

2001

Precoat Filter Media

            B102-04

2004

Manganese Greensand for Filters

     Softening

 

 

            B200

2003

Sodium Chloride

            B201

2003

Soda Ash

            B202

2002

Quicklime and Hydrated Lime

     Disinfection Chemicals

 

 

            B300

2004

Hypochlorites

            B301

2004

Liquid Chlorine

            B302

2000

Ammonium Sulfate

            B303

2000

Sodium Chlorite

     Coagulation

 

 

            B402

2000

Ferrous Sulfate

            B403

2003

Aluminum Sulfate-Liquid Ground, or Lump

            B404

2003

Liquid Sodium Silicate

            B405

2000

Sodium Aluminate

            B406

1997

Ferric Sulfate

            B407

1998

Liquid Ferric Chloride

            B408

2003

Liquid Polyaluminum Chloride

            B451

2004

Poly (Diallyldimethylammonium Chloride)

            B452

1998

EPI-DMA Polyamines

            B453

2001

Polyacrylamide

     Scale and Corrosion Control

 

 

            B501

2003

Caustic Soda (Sodium Hydroxide)

            B502

2001

Sodium Polyphosphate, Glassy (Sodium Hexametaphosphate)

            B503

2001

Sodium Tripolyphosphate

            B504

2001

Monosodium Phosphate, Anhydrous

            B505

2001

Disodium Phosphate, Anhydrous

            B510

2000

Carbon Dioxide

            B511

2000

Potassium Hydroxide

            B512

2002

Sulfur Dioxide

            B550

2000

Calcium Chloride

     Taste and Odor Control

 

 

            B600

1996

Powdered Activated Carbon

            B601

2000

Sodium Metabisulfite (Sodium Pyrosulfite)

            B602

2002

Copper Sulfate

            B603

2003

Potassium Permanganate

            B604

1996

Granular Activated Carbon

            B605

1999

Reactivation of Granulated Activated Carbon

     Prophylaxis

 

 

            B701

1999

Sodium Fluoride

            B702

1999

Sodium Silicofluoride

            B703

2000

Hydrofluosilicic Acid

PIPE AND ACCESSORIES

 

 

            C104/A21.4

2003

American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water

            C105/A21.5

1999

American National Standard for Polyethylene Encasement for Ductile-Iron Piping for Water and Other Liquids

            C110/A21.10

2003

American National Standard for Ductile-Iron and Gray-iron Fittings, 3 in. through 48 in., for Water and Other Liquids

            C111/A21.11

2000

American National Standard for Rubber-Gasket Joints for Ductile-Iron and Gray-Iron Pressure Pipe and Fittings

            C115/A21.15

1999

American National Standard for Flanged Ductile-Iron Pipe With Threaded Flanges

            C116/A21.16

2003

American National Standard for Protective Fusion-Bonded Epoxy Coatings Int.& Ext. Iron/Gray-Iron Fittings

            C150/A21.50

2002

American National Standard for the Thickness Design of Ductile-Iron Pipe

            C151/A21.51

2002

American National Standard for Ductile-Iron Pipe centrifugal Cast for Water or Other Liquids

            C153/A21.53

2000

American National Standard for Ductile-Iron Compact Fittings, 2 in. through 16 in., for Water and Other Liquids

     Steel Pipe

 

 

            C200

1997

Steel Water Pipe 6 in. and Larger

            C203

2002

Coal-Tar Protective Coatings and Linings for Steel Water Pipelines- Enamel and Tape-Hot Applied

            C205

2000

Cement Mortar Protective Lining and Coating for Steel Water Pipe-4in. and Larger-Shop Applied

            C206

1997

Field Welding of Steel Water Pipe

            C207

2001

Steel Pipe Flanges for Waterworks Service-Sizes 4 in. through 144 in.

            C208

2001

Dimensions for Fabricated Steel Water Pipe Fittings

            C209

2000

Cold-Applied Tape Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines

            C210

2003

Liquid Epoxy Coating Systems for the Interior of Steel Water Pipelines

            C213

2001

Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines

            C214

2000

Tape Coating Systems for the Exterior of Steel Water Pipelines (Includes addendum C214a-91)

            C215

2004

Extruded Polyolefin Coatings for the Exterior of Steel Water Pipelines

            C216

2000

Heat-Shrinkable Cross-Linked Polyolefin Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines

            C217

2004

Cold-Applied Petrolatum Tape and Petroleum Wax Tape Coatings for the Exterior of Special Sections, Connections

            C218

2002

Coating the Exterior of Aboveground Steel Water Pipelines and Fittings

            C219

2001

Bolted, Sleeve-Type Couplings for Plain-End Pipe

            C220

1998

Stainless-Steel Pipe, 4 in. (100mm) and Larger Concrete Pipe

            C221

2001

Fabricated Steel Mechanical Slip-Type Expansion Joints

            C222

1999

Polyurethane Coatings for the Interior and Exterior of Steel Water Pipe and Fittings

            C223

2002

Fabricated Steel and Stainless Steel Taping Sleeves

            C224

2001

Two-Layer Nylon-11 Based Polyamide Coating System for Interior and Extended Water Pipe and Fittings

            C225

2003

Fused Polyolefin Coating Systems for the Exterior of Steel Water Pipeline

     Concrete Pipe

 

 

            C300

2004

Reinforced Concrete Pressure Pipe, Steel- Cylinder Type, for Water and Other Liquids

            C301

1999

Prestressed Concrete Pressure Pipe, Steel- Cylinder Type, for Water and Other Liquids

            C302

2004

Reinforced Concrete Pressure Pipe, Non- cylinder Type, for Water and Other Liquids

            C303

2002

Reinforced Concrete Pressure Pipe, Steel-Cylinder Type, Pretensioned, for Water and Other Liquids

            C304

1999

Design of Concrete Cylinder Pipe Asbestos-Cement Pipe

     Asbestos Cement

 

 

            C400

2003

Asbestos-Cement Distribution Pipe, 4 in. through 16 in. (100 mm through 400 mm) NPS, for Water and Other Liquids

            C401

2003

Practice for the Selection of Asbestos- Cement Distribution Pipe, 4 in. through 6 in. (100 mm through 400 mm) for Water and Other Liquids

            C402

2005

Asbestos-Cement Transmission Pipe, 18 in. through 42 in. (450 mm through1050 mm), for Potable Water and Other Liquids

            C403

2005

Practice for the Selection of Asbestos- Cement Transmission and Feeder Main Pipe, Sizes 18 in. through 42 in. (450 mm through 1050 mm)

VALVES AND HYDRANTS

 

 

            C500

2002

Gate Valves for Water and Sewerage Systems

            C502

1994

Dry-Barrel Fire Hydrants

            C503

1997

Wet-Barrel Fire Hydrants

            C504

2000

Rubber-Seated Butterfly Valves

            C507

2005

Ball Valves 6 in. through 48 in. (150 mm through 1200 mm)

            C508

2001

Swing-Check Valves for Waterworks Service, 2 in. through 24 in. NPS

            C509

2001

Resilient-Seated Gate Valves for Water and Sewerage Systems

            C510

1997

Double Check Valve Backflow-Prevention Assembly

            C511

1997

Reduced-Pressure Principle Backflow- Prevention Assembly

            C512

2004

Air Release, Air/Vacuum, and Combination Air Valves for Waterworks Service

            C513

2005

Open-Channel, Fabricated-Metal, Slide Gates and Open-Channel, Fabricated-Metal  Weir Gates

            C515

2001

Reduced-Wall, Resilient-Seated Gate Valves for Water Supply Service

            C540

2002

Power-Actuating Devices for Valves and Sluice Gates

            C550

2001

Protective Epoxy Interior Coatings for Valves and Hydrants

            C560

2000

Cast-Iron Slide Gates

            C561

2004

Fabricated Stainless Steel Slide Gates

            C563

2004

Fabricated Composite Slide Gates

PIPE INSTALLATION

 

 

            C600

1999

Installation of Ductile-Iron Mains and Their Appurtenances

            C602

2000

Cement-Mortar Lining of Water Pipelines-4 in. (100 mm)  and Larger-In Place

            C603

1996

Installation of Asbestos-Cement Pressure Pipe

            C605

1994

Underground Installation of Polyvinyl Chloride(PVC) Pressure Pipe and Fittings for Water

            C606

2004

Grooved and Shouldered Joints

DISINFECTION OF FACILITIES

 

            C651

1999

Disinfecting Water Mains

            C652

2002

Disinfection of Water-Storage Facilities

            C653

2003

Disinfection of Water Treatment Plants

            C654

2003

Disinfection of Wells

METERS

 

 

            C700

2002

Cold-Water Meters-Displacement Type, Bronze Main Case

            C701

2002

Cold-Water Meters-Turbine Type, for Customer Service

            C702

2001

Cold-Water Meters-Compound Type

            C703

1996

Cold-Water Meters-Fire Service Type

            C704

2002

Cold-Water Meters-Propeller Type for Main Line Applications

            C706

1996

Direct-Reading, Remote-Registration Systems for Cold-Water Meters

            C707

1982

Encoder-Type Remote-Registration Systems for Cold-Water Meters

            C708

1996

Cold-Water Meters-Multi-Jet Type

            C710

2002

Cold-Water Meters-Displacement Type, Plastic Main Case

            C712

2002

Cold-Water Meter—Singlejet Type

            C750

2003

Transit-Time Flowmeters in Full Closed Conduits

SERVICE LINES

 

 

            C800

2001

Underground Service Line Valves and Fittings

PLASTIC PIPE

 

 

            C900

1997

Polyvinyl Chloride (PVC)  Pressure Pipe, 4 in. through 12 in., for Water Distribution

            C901

2002

Polyethylene (PE) Pressure Pipe and Tubing, 1/2 in. through 3 in., for Water Service

            C903

2002

Polyethylene-Aluminum-Polyethylene and Crosslinked Polyethylene Composite Pressure Pipes

            C905

1997

Polyvinyl Chloride (PVC) Water Transmission Pipe, Nominal Diameters 14 in. through 36 in.

            C906

1999

Polyethylene (PE)  Pressure Pipe and Fittings, 4 in. through 63 in., for Water Distribution

            C907

2004

Polyvinyl Chloride (PVC) Pressure Fittings for Water-4 in. through 8 in. (100 mm through 200 mm)

            C908

2001

PVC Self-Tapping Saddle Tees for Use on PVC Pipe

            C909

2002

Molecularly Oriented Polyvinyl Chloride (PVCO) Pressure Pipe, 4 In.-24(mm), for Water Distribution

            C950

2001

Fiberglass Pressure Pipe

STORAGE

 

 

            D100

1996

Welded Steel Tanks for Water Storage (Includes addendum D100a 1989)

            D102

2003

Coating and Steel Water-Storage Tanks

            D103

1997

Factory-Coated Bolted Steel Tanks for Water Storage

            D104

2004

Automatically Controlled, Impressed-Current Cathodic Protection for the Interior of Steel Water Tanks

            D110

2004

Wire-Wound Circular Prestressed-Concrete Water Tanks

            D115

1995

Circular Prestressed Concrete Water Tanks with Circumferential Tendon

            D120

2002

Thermosetting Fiberglass-Reinforced Plastic Tanks

            D130

2002

Flexible-Membrane-Lining and Floating-Cover Materials for Potable-Water Storage

PLANT EQUIPMENT

 

 

            F101

2002

Contact-Molded, Fiberglass-Reinforced Plastic Wash Water Troughs

            F102

2002

Matched-Die-Molded, Fiberglass-Reinforced Plastic Weir Plates, Scum B Mounting Brackets

 

Source.  (See Revision Note at part heading for Env-Dw 407) #10614, eff 6-1-14

 


Appendix A:  State Statutes and Federal /Regulations Implemented

 

Rule Section(s)

State Statute(s) Implemented

Federal Requirement(s) Implemented

Env-Dw 401.01-.401.03

RSA 485:1, II(c)

 

Env-Dw 401.04

RSA 485:3, I

40 CFR 141.5

Env-Dw 401.05

RSA 485:1, II(d)

 

 

 

 

Env-Dw 402.01

RSA 485:1, II(c)

40 CFR 142 Subpart B

Env-Dw 402.02

RSA 485:8, III & IV

 

Env-Dw 402.03

RSA 485:3, I(c); RSA 485:8

40 CFR 142 Subpart B

Env-Dw 402.04

RSA 485:3, XII

42 USC 300g-9

Env-Dw 402.05

RSA 485:8, I & II

42 USC 300f(4)(A); 40 CFR 142 Subpart B

Env-Dw 402.06

RSA 485:3, III; RSA 485:42

40 CFR 142 Subpart B

 

 

 

Env-Dw 403.01

RSA 485:3, VIII

 

Env-Dw 403.02

RSA 485:3, I

40 CFR 141.43(d)

Env-Dw 403.03

RSA 485:3, I

40 CFR 141.42(d)

 

 

 

Env-Dw 404.01 – 404.09

RSA 485:3, I; RSA 485:8

 

 

 

 

Env-Dw 405.01 - 405.36

RSA 485:1, II(c); 485:8

 

 

 

 

Env-Dw 406.01 – 406.29

RSA 485:1, II(c); RSA 485:8

 

 

 

 

Env-Dw 407

RSA 485:41, III

 

 

 

Appendix B: Incorporation By Reference Information

 

Rule Section(s)

Title

Dated

Obtain at:

Env-Dw 402.01(a)

“Recommended Standards for Water Works”, Committee Report of the Great Lakes – Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers and Sanitary Engineers.

2003

NH Department of Environmental Services office

or http://www.leafocean.com/test/10statepreface.html#IDH_Title

 

 

 

 

 

Env-Dw 403.01

American National Standards Institute (ASNI) Drinking Water Treatment Chemicals Standards #60 and #61

2003

American National Standards Institute

http://www.ansi.org/

 

 

 

 

Env-Dw 404.01(a)

 

“Recommended Standards for Water Works”, Committee Report of the Great Lakes – Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers and Sanitary Engineers.

2003

NH Department of Environmental Services office

or http://www.leafocean.com/test/10statepreface.html#IDH_Title

 

 

 

 

 

Env-Dw 405.32(j)

 

Historical Standard: ASTM  D2241-05 Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)”.

2005

American Society for Testing and Materials (ASTM)

http://www.astm.org/

 

 

 

 

 

Env-Dw 406.25(c)(8)

 

Historical Standard: ASTM D2241-05 Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)”.

2005

American Society for Testing and Materials (ASTM)

http://www.astm.org/

 

 

 

 

 

Env-Dw 407.01(a)

American Water Works Association Standards A100 through F102

Various

The NH Department of Environmental Services office