New York City Plumbing Code Cover

Copyright

Preface

Dedication

Acknowledgements

Chapter 1 Administration

Chapter 2 Definitions

Chapter 3 General Regulations

Chapter 4 Fixtures, Faucets and Fixture Fittings

Chapter 5 Water Heaters

Chapter 6 Water Supply and Distribution

Chapter 7 Sanitary Drainage

Chapter 8 Indirect/Special Waste

Chapter 9 Vents

Chapter 10 Traps, Interceptors and Separators

Chapter 11 Storm Drainage

Chapter 12 Special Piping and Storage Systems

Chapter 13 Referenced Standards

Appendix A Plumbing Permit Fee Schedule Reserved

Appendix B Rates of Rainfall for Various Cities Reserved

Appendix C Water Recycling Systems

Appendix D Degree Day and Design Temperatures Reserved

Appendix E Sizing of Water Piping System

Appendix F Structural Safety Reserved

Appendix G Vacuum Drainage System Reserved

Title 28 New York City Construction Codes

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The provisions of this appendix shall govern the materials, design, construction and installation of water recycling systems. The following water recycling uses are not addressed in this appendix:

1. Rainwater collected from piping on the exterior and used solely for subsurface irrigation, drip irrigation, watering plants using a hose and washing of sidewalks, streets, buildings or vehicles;

2. Rainwater collected utilizing a retention system through rain barrels complying with the requirements of the Department of Environmental Protection;

3. Commercial car washing facilities; and

4. Water closet-sink combinations. A fixture that enables wastewater from a lavatory to discharge directly into the flushing tank of a water closet may be utilized provided it complies with the New York City Construction Codes, including all accessibility requirements. The water closet and lavatory shall be located in the same room.
The following terms shall have the meanings shown herein.

BLACK WATER. Discharge from water closets, urinals, bathtubs, showers, clothes washers, laundry trays, washdown water and blowdown water from cooling towers, and any other fixtures discharging animal or vegetable matter in suspension or solution.

GRAY WATER. Discharge from lavatories and condensate water.

RAINWATER. Precipitation collected directly from the sky or from roof and balcony runoff.

WASTEWATER. Gray and black water.
Permits shall be required in accordance with Section PC 105.
Wastewater recycling systems shall comply with Section PC C102. Water recycling systems which harvest rainwater or condensate water used solely for drip irrigation, subsurface irrigation or cooling tower makeup shall comply with Section PC C103.
Above-ground drain, waste and vent piping for water recycling systems shall conform to one of the standards listed in Table 702.1. Underground building drainage and vent piping shall conform to one of the standards listed in Table 702.2. Distribution piping shall conform to one of the standards listed in Tables 605.4 and 605.5 and shall be painted purple in color or covered in a purple jacket and labeled in accordance with Section C101.6. Manufactured purple piping shall be approved by the commissioner.
Distribution piping and reservoirs shall be identified as containing nonpotable water. Piping identification shall be in accordance with Section 608.8.
Spigots and hose bibs dispensing recycled water shall be secured from unauthorized use by a locking mechanism. Signage reading "Caution: Nonpotable water, do not drink" shall be placed adjacent to the location of spigots and hose bibs.
Water recycling systems shall be inspected in accordance with Section PC107.
Only connections in accordance with Sections C102.3 and C103.3 shall be made between a water recycling system and a potable water system. All other connections shall be prohibited.
Water recycling systems shall receive only wastewater, groundwater, and rainwater.
Wastewater shall be collected in a reservoir constructed of durable, nonabsorbent and corrosion-resistant materials. Access openings shall be provided to allow inspection and cleaning of the reservoir interior and shall be properly gasketed and the tanks vented to prevent odors from entering into the building.
Separate collection tanks or compartments shall be provided for influent wastewater and rainwater. Where multiple collection reservoirs are provided, a separate recycled water reservoir shall be provided which shall receive treated water from the collection systems.
Recycled water receiver reservoirs shall be provided with potable water makeup in accordance with Section C102.3.
Effluent entering the collection reservoir shall pass through an acceptable filtration system suitable for the reuse application.
The collection reservoir shall be equipped with an overflow pipe having the same or larger diameter as the influent pipe for the wastewater. The overflow pipe shall be connected to the appropriate building drainage system.
All reservoirs shall be provided with a drain indirectly connected to the sanitary drainage system.
Reservoir(s) shall be provided with a vent sized in accordance with Chapter 9 and based on the diameter of the reservoir influent pipe.
Treated effluent shall only be utilized as water makeup on cooling towers equipped with drift eliminators and shall be operated in accordance with the New York City Building Code and the New York City Mechanical Code.
This section shall apply to water recycling systems collecting wastewater and rainwater. Treated effluent must comply with the water quality standards listed in Table C102.1 and may be used for flushing of water closets and urinals, cooling tower makeup, washing of sidewalks, streets or buildings, laundry, subsurface or drip landscape irrigation systems, watering plants with a hose or other approved uses that are located in the same lot as the water recycling system.

Exception: Systems collecting only rainwater and/or condensate used solely for cooling tower makeup and/or subsurface and drip irrigation shall comply with Section PC C103.

TABLE C102.1 MINIMUM WATER QUALITY STANDARDS

POLLUTANT QUANTITY LIMIT
BOD < 10 mg/la
TSS < 10 mg/l
Total Coliform < 100 per 100 ml
E. Coli < 2.2 colonies per 100 ml
pH 6.5‒8.0
Turbidity < 2.0 NTUb

a. Effluent from rainwater and condensate collected in separate tanks or compartments from wastewater shall not be required to meet the BOD limitations indicated above.
b. The wastewater facility effluent must meet the performance standards of < 2.0 NTU for turbidity for 95% of the measurements. At no time can the turbidity result be above 5 NTU. These results shall be recorded and compiled in the annual report.
Filtered effluent shall be disinfected prior to reuse by an acceptable method, which shall achieve the minimum water quality standards as stated in Table C102.1.
Potable water shall be supplied as a source of makeup water for water recycling systems included in Section PC C102. The potable water supply shall be protected against backflow in accordance with Section PC 608.
If the treated effluent water is to be dyed, the dye shall be a food grade vegetable dye either blue or green in color. Such effluent water shall be dyed before being supplied to the fixtures.
Drain, waste and vent piping for water recycling systems shall be tested in accordance with Section PC312. Distribution piping for water recycling systems shall be tested in accordance with Section 312.5 of this code. Additional tests shall be performed in accordance with Sections C102.8.1 through C102.8.3.
The system shall be "wet tested" with potable water to ensure no leaks exist and all equipment is fully functional.
After successful wet testing and once sufficient influent is established for continuous operation, the system shall be placed into start-up mode for a minimum of two weeks. Adequate flow shall be based on design requirements and nutrient loads. Samples shall be collected five days per week and each sample must meet the water quality requirements of Table C102.1. Samples not meeting the water quality requirements of Table C102.1 shall be recorded, and included in the final start-up test report. Successful start-up tests shall demonstrate 100 percent compliance with the water quality requirements of Table C102.1 for a period of two continuous weeks. Treated water effluent from the recycling system shall be directed to a floor drain. The building shall continue to operate all fixtures using only the potable water system during this start-up testing.
The system shall be placed into temporary use mode after successful start-up testing. During the temporary use mode, treated effluent from the system shall be directed into the recycled water reservoirs and shall be utilized in accordance with Section C102.1. Samples shall be collected on a weekly basis for a period of three months. The operation of the system shall immediately cease if any test sample does not meet the minimum water quality standards of Table C102.1 in which case, tests from at least five consecutive days shall demonstrate full compliance.
This section shall apply to water recycling systems collecting rainwater and/or condensate used solely for cooling tower makeup and/or subsurface and drip irrigation.
Makeup water shall not be required for drip or subsurface landscape irrigation systems. Where makeup water is provided, the potable water supply shall be protected against backflow in accordance with Section PC 608.
Treated effluent water used for cooling tower makeup and drip or subsurface landscape irrigation systems shall not be required to be dyed.
Drain, waste and vent piping for water recycling systems shall be tested in accordance with Section PC 312. Distribution piping for water recycling systems shall be tested in accordance with Section 312.5. Additional tests shall be performed in accordance with Sections C103.12.1 and C103.12.2.
The system shall be "wet tested" with potable water to ensure no leaks exist and all equipment is fully functional.
After successful wet testing and once sufficient influent is established for continuous operation, the system shall be placed into start-up mode for a minimum of two weeks. An effluent sample from the treatment system shall be collected and shall meet the water quality requirements of Table C102.1. If the sample does not meet the water quality requirements of Table C102.1 it shall be recorded and included in the final start-up test report. Successful start-up tests shall demonstrate 100 percent compliance with the water quality requirements of Table C102.1.
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