§ 20-07 Inspections.

   (a)   General regulations. All corporation stops (taps), wet connections (including internal water main), meters, service connection installations, repairs, plugs and relays are subject to inspection by the Department. A Licensed Master Plumber must certify that all work was performed in accordance with these Rules and all other applicable rules.

   (b)   Mandatory inspections. The Licensed Master Plumber must request an inspection as described in 15 RCNY § 20-02(l) and 15 RCNY § 20-02(m). Inspections are mandatory for the following categories of work:

      (1)   Corporation stops (taps/wet connections) and service connections supplying water to the fire suppression systems: sprinkler and/or standpipe and fire hydrants (private).

      (2)   Corporation stops (taps/wet connections) and service connections supplying combined water systems or domestic water systems to which fire systems are connected.

      (3)   Water service terminations (plug only).

      (4)   Destruction of any tap or wet connection which requires an excavation separate from the one required for the new tap or wet connection.

      (5)   Installed new wet connections and corresponding service connections.

      (6)   Relay or repair of sprinkler, fire, standpipe and domestic service connections to which fire sprinkler heads are connected.

   (c)   Inspection waiver. For domestic water service connection installations where inspections are mandatory, as described in 15 RCNY § 20-07(b), the Department in its discretion may waive such inspections. If the Department waives an inspection, the Licensed Master Plumber must submit the tap location with certification that all work was performed in accordance with these Rules and all other applicable rules.

   (d)   Fee for inspections. An upfront fee must be paid for each inspection in accordance with the Water and Wastewater Rate Schedule of the New York City Water Board.

   (e)   Inside flow test.

      (1)   A Licensed Master Plumber may submit a written request for permission to conduct an Inside Flow Test in lieu of a mandatory inspection. Such requests may be granted, at the discretion of the Department, but only upon demonstration of substantial hardship.

      (2)   Where a request for an Inside Flow Test is denied, the Licensed Master Plumber shall re-excavate and make the work available for an inspection.

      (3)   When performing an Inside Flow Test, the Licensed Master Plumber shall provide all necessary tools, gauges, hoses, etc.

      (4)   An Inside Flow Test shall be conducted, in the presence of a Department inspector, as follows:

         (i)   The Licensed Master Plumber installs a pressure gauge on the water service pipe near the entry to the premises.

         (ii)   The Department inspector records the static pressure.

         (iii)   The Licensed Master Plumber runs a large quantity of water to waste within the premises.

         (iv)   The Department inspector records the dynamic (with flow) pressure. Pressure readings with a measurable difference between the static pressure and the dynamic (with flow) pressure shall be acceptable.

   (f)   Permit at work site. The Licensed Master Plumber must display the permit at the work site except for emergencies.

   (g)   Inspection hours. The Department will conduct inspections Monday through Friday (except holidays) between the hours of 7:30 a.m. and 5:00 p.m., except upon a demonstration of substantial hardship.

   (h)   Backfilling before 2:00 p.m. Backfilling on installations where mandatory inspections are not required may not commence before 2:00 p.m. Failure to observe this requirement may result in the suspension of the Licensed Master Plumber's privilege to self-inspect. The Licensed Master Plumber must comply with all DOT requirements.

   (i)   Water sampling test. Before taps are installed in a new internal water main, the main must pass a water sampling test. The main must be disinfected and a satisfactory water sample must be obtained by the Contractor in the presence of the Department representative only. A water sample will be considered satisfactory if it is free of bacteria, with acceptable color, odor, taste, temperature, turbidity, and has measurable residual chlorine, as determined by the Department.

(Amended City Record 7/26/2021, eff. 8/25/2021)

§ 20-08 Water Use Restrictions and Fire Hydrant Use.

   (a)   Water use restrictions. The use of water is permitted, subject to the following restrictions:

      (1)   Prohibition of Use as a Source of Energy. The use of the pressure or flow of water as a source of energy is prohibited, except when specifically approved by the Department or for charging the battery of an electronic plumbing fixture.

      (2)   Restrictions on Use for Coolant Purposes. The use of City water for coolant purposes in industrial and commercial equipment is prohibited, except with the use of an approved "water conservation device," in accordance with 15 RCNY § 20-06.

      (3)   Required Recirculation in Fountains, Ornamental Pools, Aquariums and Similar Structures. Display fountains, ornamental pools, aquariums, and similar structures using water in excess of the rate of one-half (1/2) gpm shall be recirculated.

      (4)   Shutoffs Required for Drinking Fountains and Recreational Sprinklers. Drinking fountains shall operate only when activated by a user. Recreational sprinklers shall be equipped with a timer to stop flow if the sprinkler is not being used or shall not operate when not in use.

      (5)   [Reserved.]

      (6)   Watering of lawns and gardens.

         (i)   The use of a hose, automatic sprinkler or other means to water lawns or gardens is prohibited between the hours of 11:00 a.m. and 7:00 p.m. Automatic irrigation systems shall include a sensor or control which shall prevent operation during or within 24 hours of substantial rain.

         (ii)   Between the first day of November and the last day of the following March, the following activities are prohibited using City water: (a) the use of hoses and sprinklers, and (b) the watering of lawns and gardens, except for the watering of non-turf plants with a hand-held container.

         (iii)   The following activities are prohibited at all times: (a) the use of hoses which flow at more than five (5) gpm at sixty (60) psi or which, regardless of flow rate, are not equipped with an automatic shutoff mechanism which will turn off the flow of water if a handle or trigger is not actively held or compressed, and (b) the practice of allowing sprinklers to flood sidewalks, gutters and roadways.

      (7)   Sidewalks flushing. The flushing of sidewalks is prohibited between the hours of 11:00 a.m. and 7:00 p.m. In addition, the flushing of sidewalks by means of a hose or piping is prohibited between the first day of November and the last day of the following March. This provision, however, shall not be construed to prohibit the washing of such surfaces, particularly the exterior surface of a building, where such washing is required as part of repairs mandated by the Administrative Code or to protect the health and safety of the public. For one, two, or three-family homes, any hose used to supply City water for sidewalk cleaning purposes must be equipped with a nozzle which limits flow to no more than five (5) gpm at sixty (60) psi and which is equipped with an automatic shutoff mechanism which will turn off the flow of water if a handle or trigger is not actively held or compressed. For multiple dwellings, commercial occupancies, or where required by the Administrative Code or by the Department for health and safety purposes, any hose used to supply City water for sidewalk cleaning purposes shall use a fixture that flows at no more than 2.5 gpm, irrespective of pressure.

      (8)   Temporary Suspension of Permission to Use City Water for Purposes Listed in paragraphs (6) and (7). The Commissioner may suspend the authorization granted herein for the flushing of sidewalks and the watering of lawns and gardens. Such a suspension may be implemented without formal notice, through advisories issued via broadcast or print media. Upon the declaration of either a Water Pressure Alert or a Water Pressure Emergency, the use of City water to flush sidewalks and to water lawns or gardens is prohibited until the alert/emergency has ended.

      (9)   Car washing.

         (i)   The use of City water for commercial car washing purposes is prohibited, except (a) where at least seventy-five (75) percent of the water is reused by means of a recirculating system which uses City water for the final rinse only, or (b) where coin operated automatic high pressure equipment is employed. Any premise using City water for commercial car washing must install an approved backflow prevention device.

         (ii)   Garages, gasoline service stations, and other similar establishments which furnish car washing as part of their regular service and do not employ automatic car washing equipment, as described above, may use buckets of water only.

         (iii)   Any hose used to supply City water for non-commercial car washing purposes must be equipped with a nozzle which limits flow to no more than five (5) gpm at sixty (60) psi and which is equipped with an automatic shutoff mechanism which will turn off the flow of water if a handle or trigger is not actively held or compressed.

   (b)   Fire hydrant use.

      (1)   Fire hydrants on the raw may be routinely opened only by authorized employees of the Department and/or the Fire Department. All others seeking permission to open a fire hydrant must secure a permit from the Department, Bureau of Customer Service. Fire Hydrant Use Permits shall be secured at the site where water is being used. Permits for the use of hydrants may not be granted when, in the view of the Department, water from a metered source is available to serve the end use described in the permit application. Permit applicants are required to describe the proposed use in detail and indicate why another alternative (e.g., existing metered source or construction meter) cannot be used. Only approved hydrant wrenches may be used. Water must be obtained from the smaller size hydrant nozzle only. Caps and chains are not to be broken and must be securely replaced after use.

      (2)   Fire Hydrant Use Permits are valid only on the days specified therein, unless otherwise approved by the Department.

      (3)   Permits shall not be issued for use of fire hydrants supplied by water mains which are twenty (20) inches or larger in diameter. Fire hydrants may not be obstructed, and shall be available, at all times, for use by the Fire Department.

      (4)   With the exception of hoses used to extinguish fires, any hose connected to a fire hydrant must be equipped with an approved Reduced Pressure Zone backflow prevention assembly (RPZA). Applications which do require a RPZA include, but are not limited to, demolition dust control, pavement breaking, cutting and sawing, mixing and curing of concrete or mortar, well digging, washing/pumping of manholes, basements or sewers, application of pesticides, herbicides, paints, curing agents or fertilizers, washing down roadway construction, or make-up water. (See Appendix Figure #6).

      (5)   Connections to fire hydrants shall be made by valve and couplings which can be readily detached in case of emergency. Where valve and couplings are used, the hydrant must be fully open at all times. The rate of flow shall be governed by the installed valve, and all such connections shall be uncoupled immediately after use.

      (6)   All fire hydrants used during the period from November 1st to April 15th shall be pumped out immediately after use. Hydrants Use Permits shall be invalid when the temperature is below thirty-two (32) degrees Fahrenheit.

      (7)   Defective hydrants shall immediately be reported to the Department by the permit holder.

      (8)   Opening a fire hydrant without a permit shall be a violation.

   (c)   Installation and maintenance of corporation stops (taps), wet connections, service pipes and curb valves.

      (1)   Installation and maintenance. The property owner shall be responsible for installation and maintenance of corporations stops (taps), wet connection sleeves and valves, three-ways, service pipes, and curb valves.

      (2)   Shut-off charges. Should the Department shut a tap because of a leaking service pipe, non-payment of a bill, denial of access for an inspection or meter replacement or repair, failure to make repairs required for the installation or replacement of a meter, or non-compliance with Department rules, the owner shall pay a shut-off charge in accordance with the Water and Wastewater Rate Schedule of New York City Water Board.

(Amended City Record 7/26/2021, eff. 8/25/2021)

§ 20-09 Enforcement.

Any person who is in violation of or fails to comply with any provision, standard or requirement of these Rules or the terms and conditions of any permit issued pursuant to these Rules shall be subject to the issuance of notice(s) of violation and other civil or criminal enforcement action(s) pursuant to the provisions of § 24-346 of the Administrative Code of the City of New York, including but not limited to payment of civil penalties and compliance with orders of the Commissioner and/or the Environmental Control Board. In addition to any civil and criminal enforcement pursuant to § 24-346 of the Administrative Code of the City of New York, the Department may refuse to issue permits to any person who is in violation of, or fails to comply with, any provision, standard or requirement of these Rules or the terms and conditions of any permit, in accordance with 15 RCNY § 20-01(c).

§ 20-10 Glossary.

For the purposes of "The Rules Governing and Restricting the Use and Supply of Water", the following definitions shall apply:

   Aesthetically objectionable. A condition which could be objectionable to other water consumers, but would not adversely affect human health. Substances such as food-grade dyes, hot water, and stagnant water from fire lines in which no chemical additives are used may result in aesthetically objectionable conditions.

   Air gap separation. Air Gap Separation means the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of the receptacle. The differential distance shall be at least double the diameter (D) of the supply pipe. In no case shall the air gap be less than 1 inch.

   Applicant. Any person applying for a permit pursuant to these Rules.

   AMR – Automatic Meter Reading. The use of radio or telephone-based technology to read water meters.

   ANSI. The American National Standards Institute.

   ASCII. American Standard Code for Information Interchange.

   ASTM. The American Society for Testing Materials.

   Automatic water regulating device. A self regulating valve or other device, the purpose of which shall be to limit the maximum use of City water on air conditioning and refrigeration units that do not have a water conserving device to 1.5 gpm per ton of refrigeration or air conditioning.

   AWWA. The American Water Works Association.

   Backflow prevention device. An approved air gap, reduced pressure zone (RPZ) device, or double check valve assembly (DCV) used to contain potential contamination within a facility.

   Backflow. The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source. Backsiphonage is one type of backflow.

   Ball valve. A valve capable of regulating, stopping or starting flow with a one-quarter (90°) turn of the valve by means of a movable ball which fits in a spherical seat.

   BCS. Bureau of Customer Services.

   Booster system. A pumped system used to deliver water at a higher pressure within a building.

   Building. An enclosed structure having a specific block and lot (or tax sub-lot) and a separate entry from the street or an outdoor area.

   City. The City of New York.

   City water. Water supplied by the City of New York.

   City water main. A water main owned and maintained by the City of New York under the jurisdiction of the Department.

   Combined service. A water service which supplies both domestic and fire suppressions end uses and the fire protection requirements exceed the domestic demand and determine the size of the service.

   Commissioner. The Commissioner of the New York City Department of Environmental Protection.

   Completed meter permit. A meter permit returned to the Department that indicates the meter size, type, serial number, remote identification number, meter and remote receptacle location, and date of installation that has been signed and sealed by the licensed plumber and lists the licensed plumber's business address.

   Connection. A water service pipe which connects the customer or a development to a City Water Main, Private Water Main, or Internal Water Main.

   Cross connection. An actual connection or a potential connection between any part of a potable water system and any other environment that would allow substances to enter the potable water system. Those substances could include gases, liquids, or solids, such as chemicals, water products, steam, water from other sources (potable or nonpotable), or any matter that may change the color or add odor to the water. Bypass arrangements, jumper connections, removable sections, swivel or changeover assemblies, or any other temporary or permanent connecting arrangement through which backflow may occur are considered to be cross connections.

   Curb valve. A shutoff valve on the service connection in the sidewalk area outside the property, generally located eighteen (18) inches from the curb line.

   Customer. Any person to whom City water is supplied.

   Day. Except as otherwise stated, day shall refer to calendar day.

   DDC. New York City Department of Design and Construction.

   Department or DEP. The New York City Department of Environmental Protection.

   Distribution piping. All piping downstream of the water meter setting.

   Degree of hazard. The assessment or evaluation of a facility's domestic water system's cross-connections as they relate to the health hazard of the consumers of water. A facility may be rated Hazardous, Aesthetically Objectionable or Non-Hazardous.

   Department. The New York City Department of Environmental Protection.

   Disinfection. Chlorination in accordance with methods approved by the Department.

   Domestic service with sprinkler heads. A domestic service sized for domestic demands which has been approved by the Department of Buildings to supply a limited number of fire sprinkler heads.

   Domestic use. Water consumed for purposes other than extinguishing fire.

   DOT. New York City Department of Transportation.

   Double check detector assembly. A device consisting of two (2) single independently acting check valves, suitable connections for testing the water tightness of each valve, and a by-pass meter that shows whether flow has occurred from the water service connection into the premises, and a small double check valve housed together as one assembly.

   Double check valve assembly. A backflow prevention consisting of two internally loaded independently operating check valves, located between two tightly closing resilient-seated shutoff valves with four properly placed resilient-seated test cocks. This assembly shall only be used to protect against a non-health hazard (i.e., a pollutant).

   Drip line. The outer circumference of a tree's branches and the farthest point where water drips from the tree branches onto the ground.

   Electronic meter (electromagnetic meter). A meter that operates using Faraday's Principle.

   Encoder-Register. A device from which electronic meter reading data can be obtained from the meter semiautomatically and at a remote location.

   Fee. A charge determined by the New York City Water Board.

   Fire department. The New York City Fire Department.

   Fire service meter. A water meter certified by an AWWA standard for such meters and approved by the Department for use on a service, subject to fire service flows.

   Fire pump. A pump installed on a service connection to insure adequate flow for purposes of fire protection system.

   Fire service. A service connection that supplies water exclusively to a fire protection system (sprinkler, standpipe, combination of sprinkler and standpipe or hydrant).

   Fixture units. A measure of the probable hydraulic demand on the water supply by various types of plumbing fixtures.

   Flood level rim. The edge of the receptacle from which water overflows.

   Flushometer valve. A device which discharges a predetermined quantity of water to fixtures (urinals / tankless toilets) for flushing purposes and is actuated by direct water pressure.

   Gooseneck. An extra three (3) to five (5) feet of water service connection installed to the right of the corporation stop (tap) when facing the corporation stop (tap). (See Appendix Figure #2).

   G.P.M. (gpm). The rate of flow of water in a service connection, or through a meter or a pump, measured in gallons per minute.

   Hazardous facility. A facility in which substances may be present that may endanger the health of other customers if introduced into the public water system. Examples include: laboratories, sewage treatment plants, chemical plants, hospitals, and mortuaries.

   House tank (roof tank). An elevated water storage tank used to feed domestic and/or fire systems, which is usually located on the roof.

   Hydrant. A standard New York City fire hydrant.

   I.D. The inside diameter of a pipe.

   Inspection. An investigation and review, by the City, of work performed by others under a permit by the Department, and which is evidenced by a certificate of inspection.

   Internal fire protection system. A fire pump system, a sprinkler system, a standpipe system, combination sprinkler and standpipe system, or any fire suppression system approved by the Department of Buildings.

   Internal water main. A water main constructed by a private entity in private property and not in a mapped street, record street or a street for which an opinion of dedication has been issued. Internal water mains are under the jurisdiction of the Department from the City or private water main up to and including the meter.

   Irrigation system. Connection used to supply water to vegetation.

   Jacketed pipe insulation. Pipe insulation with a covering design to retard vapor infiltration into the insulation and for protection against physical abrasion and damage.

   Licensed master plumber. A plumber licensed by the City agency having jurisdiction over such licenses to perform plumbing work within New York City.

   Mapped street. A street that appears on the official map of New York City.

   Meter. An instrument for measuring amounts of water consumed.

   Meter register. The system component that converts the movement of the meter's impeller, turbine, or disc into an electronic signal or display. This component consists of a meter register and a signal (data) encoder assembly, and is assembled as either a single unit, or as separate units to be mounted on the meter.

   Meter set date. The date the meter is installed.

   Meter setter / resetter. A shop or factory-fabricated set of piping, valves and an electrical continuity bar installed as a unit designed to hold a water meter of two (2) inches or less in diameter.

   MTU. Meter Transmitter Unit. An electronics box wired to the water meter. The MTU is part of the AMR system programmed to read the meter and transmit radio frequency readings to a remote receiving unit.

   New York City Water Board. A corporate municipal instrumentality of the State of New York established by Chapter 515 of the Laws of 1984 which is authorized to establish and collect fees, rates and other service charges for use of, or for services furnished by, the New York City water and sewer systems.

   Non-turf plants. Plants other than a lawn.

   Nozzle. A spring loaded self-closing device used for controlling the flow of water from a hose.

   Offset swing joint. An installation consisting of three (3) lengths of pipe and four (4) elbows which are installed in lieu of a gooseneck. (See Appendix Figure #2.)

   OSHA. The Occupational Safety and Health Administration of the United States Department of Labor.

   OS&Y valve. The outside stem and yoke valve used on fire lines.

   Person. An individual, partnership, company, corporation, association, organization, governmental agency, administration, department, any other group of individuals, or an officer or an employee thereof.

   Pit meter. A water meter installed in an outside pit or vault.

   Private water main. A water main constructed by a private person in the bed of a final mapped street or record street.

   Professional engineer. An engineer licensed by the New York State Education Department to practice professional engineering in New York State.

   psi. The static pressure of water within a closed piping system, or the loss of water pressure due to flow through a piping system, flow control devices or flow measuring devices, measured in pounds per square inch.

   Record street. A street that appears on the Tax Map of the City but may not be a mapped street.

   Reduced Pressure Zone (RPZ) Device. A backflow prevention device assembly consisting of a mechanical, independently acting, hydraulically dependent relief valve, located between two independently operating, internally loaded check valves that are located between two tightly closing resilient-seated shutoff valves with four properly placed resilient-seated test cocks. This assembly shall be tested at least annually and is suitable for direct high hazard cross-connections.

   Reduced pressure principle detector assembly (RPDA). A specially designed assembly composed of a line-size approved reduced pressure principle backflow prevention assembly with a bypass containing a specific water meter and an approved reduced pressure principle backflow prevention assembly specifically designed for such application. The meter shall register accurately for very low flow rates of flows up to 2 gallons per minute and shall show registration for all rates of flow. This assembly shall be used to protect against a health hazard (i.e. containment) on fire protection services only.

   Registered architect. A person licensed by the New York State Education Department to practice architecture in New York State.

   Relay. Replacement of an entire water service connection without replacement of the corresponding corporation stop (tap) or wet connection.

   Remote read resolution. Refers to the smallest increment of water volume provided in the meter reading transmitted to a remote location. For example, a water meter may generate a reading in cubic feet, units of tens of cubic feet, or units of hundreds of cubic feet.

   Remote receptacle. A system component at a location away from the meter that receives the probe of a portable visual-display unit, or a portable meter reading unit.

   Rodding. The installation of steel rods in order to secure and prevent movement of joints, valves, caps, plugs, fittings and accessories.

   Sealed Building. A building with windows and doors which are locked and covered or blocked by concrete block, bricks, sheet metal or other materials intended to prevent access. Windows covered with wooden boards shall not constitute a sealed building.

   Sidewalk valve. A valve on a domestic service pipe located in the sidewalk area, at a distance of two (2) feet (street side) from the property line.

   Stuffing box. That part of a valve which contains packing or similar material which prevents leakage when the valve is operated.

   Suction tank. A tank used to protect the City distribution system from a large, sudden water demand.

   Swing joint connection. An acceptable method of connecting to either well water or City water.

   Tap. A corporation stop approved by the Department which controls the flow of water.

   Tax lot. A portion or parcel of land classified as such by the Department of Finance.

   Tee connection. A three-way pipe fitting installed in a private water main or internal water main in lieu of a tap or wet connection.

   Test tee. A downward pointing plain tip faucet or hose connection located after the water meter but before the meter outlet valve that is used for connecting an outlet hose for meter accuracy testing.

   Title vested street. A mapped street or record street whose ownership has been accepted by the City of New York, or a street which has a Corporation Counsel Opinion of Dedication.

   UL/FM. Underwriter's Laboratories/Fireman's Mutual.

   Vacant building. A building which is not inhabited, or is occupied illegally.

   Valve. A non-rising stem gate valve or full port ball valve.

   Valve box. A standard New York City valve enclosure including the skirt, head and cover.

   Waiver. The act of intentionally relinquishing a right or privilege.

   Water conserving device. With reference to air conditioning or refrigeration systems, an evaporative condenser, water cooling tower, spray pond or economizer.

   Water meter accuracy testing ("meter testing"). Refers to testing the accuracy of a water meter in the field, on an indoor test bench, using methods designed by the Department and in conformance with AWWA's Manual M6: "Water Meters – Selection, Installation, Testing and Maintenance."

   Water meter setting. The water meter, inlet and outlet isolation valves, test tee, and associated approved piping and fittings.

   Water outlet. An orifice through which water is supplied to a fixture, into the atmosphere, to a boiler or heating system, or to any device which requires water to operate.

   Water service connection. A water supply pipe which connects the customer or a development to a City water main, private water main or internal water main. Service connections connecting a single customer's premises to a City water main or a private water main or internal water main are under the jurisdiction of the Department from the City water main or private water main or internal water main up to and including the meter outlet valve in metered properties, or the first valve within the property in unmetered properties.

   Wet connection. The hardware required to install a connection larger than two (2) inches without interruption of water service. A wet connection shall consist of a sleeve and a corresponding valve approved by the Department.

(Amended City Record 7/26/2021, eff. 8/25/2021)

Appendix

TABLES FOR 15 RCNY CHAPTER 20 

Table 1
Fixture Units – Table of Equivalents

Fixture	Dwellings	Commercial/Industrial Buildings
Kitchen & Laundry
Kitchen Sink	2	4
Laundry Tray (1 to 3 Sections)	3	3
Dishwasher (1/2 Inch Outlet)	1	4
Washing Machine (Automatic)	2	See Commercial Washing Machine Fixture Units Below
Bathroom, Washroom & Shower
Bathroom Group: (Toilet, Sink & Tub/Shower)
(a) Tank	6	11
(b) Flush Valve	8	15
Toilet
(a) Tank	3	5
(b) Flush Valve	6	10
Wash Basin	1	2
* Bath Tub	2	4
* Shower	2	4
Urinal	3	6
Commercial Washing Machine & Other Plumbing Outlets
Cold Water Only - 5/8 Inch & Smaller	1	2
Hot & Cold Water - 5/8 Inch & Smaller	2	4
Cold Water only - 3/4 Inch	2	4
Hot & Cold Water - 3/4 Inch	4	8
Cold Water Only - 1 Inch	3	6
Hot & Cold Water - 1 Inch	6	12

 

* A bath tub and the shower over it are considered to be a single fixture.

Table 2
Conversion of Fixture Units to Rate of Flow

Fixture Units	Rate of Flow
Premises with more than 20% flushometers	Premises with less than 20% flushometers	(gpm)
–	10	8
–	15	12
–	20	15
5	30	20
10	40	25
15	60	33
25	80	39
35	108	43
50	125	49
65	150	55
75	175	60
90	200	64
100	210	66
110	225	70
125	250	74
150	270	78
175	300	83
200	340	92
250	375	100
300	410	105
325	450	115
358	475	120
400	500	130
450	550	135
500	600	140
550	630	150
600	700	155
650	720	165
700	750	170
750	800	180
800	850	185
850	875	190
900	925	195
950	950	200
1,000	1,000	205
1,500	1,500	270
2,000	2,000	330
2,500	2,500	380
3,000	3,000	440
3,500	3,500	490

 

Table 3
Minimum Size of Service Pipes, Corporation Stops (Taps) and Wet Connections
Based on the Rate of Flow in Gallons

Length of Service Pipe (ft.)		10	20	25	30	40	50	55	60	80	100	150	200	250	300	350	400	450	500	550	600
Service Pipe Size (in.)	Tap/W.C. Size (in.)	Allowable Flow (gpm)
1	3/4	21	15	13	12	10	9	9	8	7	6	4	4	3	3	3	2	2	2	2	2
1	1	21	15	13	12	10	9	9	8	7	6	4	4	3	3	3	2	2	2	2	2
1 1/4	1	37	25	23	21	17	16	15	14	13	12	10	8	7	6	6	5	5	5	4	4
1 1/2	1	55	41	37	34	28	25	24	23	20	18	14	12	11	10	9	8	8	7	7	7
1 1/2	1 1/2	55	41	37	34	28	25	24	23	20	18	14	12	11	10	9	8	8	7	7	7
2	1 1/2	100	84	75	70	59	52	50	48	41	37	28	24	21	19	18	16	15	15	14	13
2	2	100	84	75	70	59	52	50	48	41	37	28	24	21	19	18	16	15	15	14	13
2 1/2	2	150	150	135	125	105	93	90	86	73	65	46	39	35	31	29	27	25	23	22	21
3	3	220	220	210	200	165	145	140	135	120	105	81	70	61	56	51	48	45	42	40	38
4	3	300	300	300	290	250	220	210	200	170	155	130	119	110	104	98	94	90	86	82	78
4	4	390	390	390	390	350	320	305	290	250	220	165	142	126	114	105	98	92	86	82	78
6	4	600	600	600	600	600	550	525	500	430	380	285	245	215	195	185	177	170	165	162	158
6	6	880	880	880	880	880	880	840	810	700	620	490	420	370	335	310	290	270	254	245	235
8	6	1,550	1,550	1,550	1,550	1,550	1,550	1,550	1,550	1,400	1,300	1,010	865	765	670	640	595	555	525	500	475
10	8	2,450	2,450	2,450	2,450	2,450	2,450	2,450	2,450	2,450	2,300	1,840	1,575	1,395	1,260	1,160	1,080	1,015	955	905	865
12	10	3,500	3,500	3,500	3,500	3,500	3,500	3,500	3,500	3,500	3,500	2,950	2,530	2,245	2,030	1,870	1,740	1,635	1,535	1,460	1,400

 

Flows are based on a maximum pressure loss of two (2) psi in the service pipe or a maximum velocity of ten (10) ft per second, whichever results in a lesser rate of flow

Assumptions:

   (a)   Hazen-Williams Coefficient C = 100

   (b)   Loss through tap is negligible

   (c)   Loss through curb valve and house control is negligible

   (d)   Loss through meter is negligible

   (e)   Loss through backflow preventer is negligible

(Amended City Record 7/26/2021, eff. 8/25/2021)

Table 4
Excavations for Corporation Stops (Taps) and Wet Connections

Wet Connections							Corporation Stops
Size		Dimension of Openings					Size	Dimension of Openings
Wet Conn.	Water Main	A	B	C	D	E	Water Main	F	G	H	I
3" & 4"	6"	8'-2"	4'-0"	1'-0"	7'-2"	2'-0"	4"	4'-4"	3'-0"	2'-2"	1'-6"
3" & 4"	8"	8'-4"	4'-0"	1'-1"	7'-3"	2'-0"	6"	4'-6"	3'-0"	2'-3"	1'-6"
3" & 4"	12"	8'-8"	4'-6"	1'-3"	7'-5"	2'-3"	8"	4'-8"	3'-0"	2'-4"	1'-6"
3" & 4"	16"	9'-1"	4'-10"	1'-5"	7'-8"	2'-5"	12"	5'-0"	3'-0"	2'-6"	1'-6"
3" & 4"	20"	9'-5"	5'-2"	1'-7"	7'-10"	2'-7"	16"	5'-4"	3'-0"	2'-8"	1'-6"
6"	8"	8'-7"	5'-0"	1'-1"	7'-6"	2'-6"	20"	5'-8"	3'-0"	2'-10"	1'-6"
6"	12"	9'-0"	5'-0"	1'-3"	7'-9"	2'-6"	24"	6'-0"	3'-0"	3'-0"	1'-6"
6"	16"	9'-4"	5'-0"	1'-5"	7'-11"	2'-6"	Where to corporation stops are placed in the same opening, make G 4'-0" for corporation stops up to and including 1" in size, and 5'-0" for corporation stops 1 1/2" and 2" in size.   Note: Refer to Figure #1 for Dimensions of Openings.
6"	20"	9'-8"	5'-2"	1'-7"	8'-1"	2'-7"
8"	12"	9'-2"	5'-0"	1'-3"	7'-11"	2'-6"
8"	16"	9'-6"	5'-2"	1'-5"	8'-1"	2'-7"
8"	20"	9'-10"	5'-6"	1'-7"	8'-3"	2'-9"
12"	16"	9'-10"	5'-4"	1'-5"	8'-5"	2'-8"
12"	20"	10'-2"	5'-8"	1'-7"	8'-7"	2'-8"
16"	20"	10'-8"	5'-8"	1'-7"	8'-11"	2'-10"

 

Table 5
Specification 32-P-3:93, Division of Municipal Supply Services
Red Brass Pipe

Nominal Size (Inches)	Outside Diameter (Inches)	Wall Thickness (Inches)	Nominal Weight (Pounds Per Foot)
3/4	1.050	0.114	1.27
1	1.315	0.126	1.78
1 1/4	1.660	0.146	2.63
1 1/2	1.900	0.150	3.13
2	2.375	0.156	4.12
2 1/2	2.875	0.187	5.99
3	3.500	0.219	8.56
4	4.500	0.250	12.7

 

Table 6
Specification 32-T-1:94, Division of Municipal Supply Services
Seamless Copper Tubing

 

Nominal Size (Inches)	Outside Diameter (Inches)	Wall Thickness (Inches)	Nominal Weight (Pounds Per Foot)
3/4	0.875	.065	0.641
1	1.125	.065	0.839
1 1/4	1.375	.065	1.04
1 1/2	1.625	.072	1.36
2	2.125	.083	2.06

 

Table 7
Specification ANSI/AWWA/C151/a21.51-91
Ductile Iron Pipe

Nominal Size (Inches)	Outside Diameter (Inches)	Wall Thickness (Inches)	Class	Nominal Weight (Pounds Per Foot)
3	3.96	0.28	52	9.9
4	4.80	0.29	52	12.6
6	6.90	0.43	56	26.7
8	9.05	0.45	56	37.2
10	11.10	0.47	56	48.0
12	13.20	0.49	56	59.9
14	15.30	0.51	56	72.5
16	17.40	0.52	56	84.4
20	21.30	0.54	56	109.3

 

Table 8
Meter Size Selection Table

Meter Size	Meter Type	Max. Peak Flow Rate (gpm)
3/4"	Displacement	25
1"	Displacement	50
1 1/2"	Displacement	100
2"	Displacement	150
1 1/2"	Vertical Turbine	100
2"	Turbine	180
3"	Turbine	1,000
4"	Turbine	1,250
6"	Turbine	2,500
8"	Turbine	3,500
10"	Turbine	5,500
12"	Turbine	7,000
1"	Single-jet	20
1 1/2"	Single-jet	90
2"	Single-jet	130
3"	Single-jet	200
4"	Single-jet	350
6"	Single-jet	650
2"	Compound	120
3"	Compound	350
4"	Compound	600
6"	Compound	1,600
8"	Compound	2,500
10"	Compound	3,500

 

Figure 1. Excavation for Taps and Wet Connections.

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 2. Methods for Connecting Service Pipe.

Figure 3. House Service Pipe Connection.

Figure 4. Service Pipe in Subway Air Vent.

Figure 5. Swing Joint Connection Between City Water and Well Water Supply.

Figure 6. Arrangement for Use of a Backflow Preventer when Using a Fire Hydrant.

Figure 7. Typical Meter Setting for Displacement Meters. (N.T.S.)  

(Amended City Record 7/26/2021, eff. 8/25/2021)

Figure 8. 1" – 2" Domestic Service with Fire Protection Sprinklers for Single-Jet or Electronic Meter  

(Amended City Record 7/26/2021, eff. 8/25/2021)

Figure 9. Typical for Turbine Single-Jet, or Electronic Meters. (N.T.S.)  

(Amended City Record 7/26/2021, eff. 8/25/2021)

Figure 10. Typical Meter Setting with By-Pass. Typical for Turbine, Single-Jet or Electronic Meters. (N.T.S.)  

(Amended City Record 7/26/2021, eff. 8/25/2021)

Figure 11. Water Meter Enclosure for 3/4" - 2" Meters. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 12. Installation of 3/4" - 2" Water Meter in Enclosure with Service Pipe 4 Ft. or Less Below Grade. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 13. Installation of 3/4" & 2" Water Meter in Enclosure with Service Pipe More than 4 Ft. Below Grade. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 14. Detail: Brick Setting for Bottom Enclosure. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 15. Section Concrete Foundation for Bottom of Enclosure in Sidewalk and Driveway Areas. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 16. Pit Under Inclined Area. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 16A. Pit Under Inclined Area. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 16B. Pit Setter Stabilizer Bar. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 16C. Pit Setter Stabilizer Bar. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 17. Typical Meter Vault.

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 18. 2" or Larger Combined Service DCV Option. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 19. Typical Condominium Metering. Refer to 15 RCNY § 20-05(1). (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 20. Meter in Existing Indoor Pit. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.

Figure 21. Wall Mounting Meter Setting. (N.T.S.)

Editor's note: the image displayed above is the highest quality available to the publisher.