CHAPTER Env-Dw 400 PUBLIC WATER
SYSTEM CLASSIFICATION
PART Env-Dw
401 PWS CLASSIFICATION;
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
(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
(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
(b)
The
owner of a public water system shall use flow mix as a treatment
alternative
only:
(1) For contaminants in excess of the
(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
(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
(e) Standards for submersible pumps shall be as
specified in We 600 as adopted by the
(f) Standards for installation, maintenance,
repair, or replacement of pumps shall be as specified in We 700 as adopted by
the
(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
(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
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,
(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,
(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,
(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)
(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
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
(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 (
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
(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 (
(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)
(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)
(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
(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 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 |
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 |
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 |
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 – |
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 |
|
|
|
|
Env-Dw
404.01(a) |
“Recommended Standards for
Water Works”, Committee Report of the Great Lakes – |
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 |