N.Y. Comp. Codes R. & Regs. tit. 6, § 42.9 – Safety of water and ice.

(1) No person shall fail to provide a water supply of drinking water quality.
(2) No person shall use a facility, building or structure which does not have a permanently installed supply of water and cold running water of drinking water quality.
(3) No person shall use a water supply that is not protected from backflow.
(4) No person shall use a water supply unless it is protected from wastewater and/or sewage cross connections.
(5) No person shall fail to have water from non-public water systems or private wells tested prior to use, after it has been repaired and at least two times a year by an approved laboratory.
(b) Ice.
(1) No person using ice as a refrigerant shall fail to make such ice from water of drinking water quality or use ice from an approved source.
(2) No person shall fail to store and handle such ice in a manner which will prevent the contamination thereof.
(3) No person shall fail to store ice in areas that are equipped with drains adequate to prevent the accumulation of water created by melting ice.
(4) No person using ice as a refrigerant shall fail to use shovels, scoops, pails, buckets and other equipment for the handling of ice which have been constructed from safe materials, kept non-corroded, clean, sanitary and stored in a manner which will prevent the contamination thereof.

(a) Water supply.