Water Supply Systems

NYC Admin. Code tit. 27, ch. 1, subch. 16, art. 2

in effect

NYC Admin. Code § 27-906 Public water supply.

§ 27-906 Public water supply. (a) Required capacity. Where the required capacity of potable water supply is available from street water mains at the site, every building shall be supplied from such mains. (b) Power pumps. When power pumps are required in the water supply system of a building, they shall take their supply from the street water mains in the manner prescribed in reference standard RS-16.

NYC Admin. Code § 27-907 Private water supply.

§ 27-907 Private water supply. Every private source of potable water supply, other than a water supply company franchised by the city of New York shall be subject to the approval of the commissioner; and every private source of nonpotable water supply shall be submitted to the commissioner for approval and recording.

NYC Admin. Code § 27-908 Cross-connection of supplies and identification.

§ 27-908 Cross-connection of supplies and identification. (a) Cross-connection. No person shall connect water piping supplied directly from street water mains to other sources; and no cross-connection shall be made between the potable water distribution system and any portion of waste or soil systems, or between the potable water distribution system and fixtures or devices that may contaminate, pollute, or otherwise render the water nonpotable. (b) Identification. Water supply systems not approved as potable shall be identified at each outlet with a warning sign stating that the water is unfit, and its use prohibited, for drinking purposes. Piping carrying potable water shall be identified and distinguished from water piping carrying nonpotable water by distinctive painting or markings as prescribed in reference standard RS-16. (c) Construction. The construction of water supply systems shall be in accordance with the requirements of reference standard RS-16.

Source: City of New York, Charter, Administrative Code and Rules (American Legal Publishing XML export, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/newyorkcity/latest/NYCadmin/0-0-0-52976Fetched: 10/24/2026