N.Y. Comp. Codes R. & Regs. tit. 1, § 2.35 – Water supply—Item 7p.

(a) Water for milk plant purposes shall be adequate for the operations intended and from an adequate supply, properly located, protected and operated. Any water that contacts food, food-contact surfaces, or food-packaging materials shall be easily accessible and of a safe and sanitary quality, and shall not cause allergen cross-contact or increase the level of contamination of the food. Running water at a suitable temperature, and under pressure as needed, shall be provided in all areas where required for the processing of food, for the cleaning of equipment, utensils, and food-packaging materials, or for employee sanitary facilities.
1. (1) When ice is used in contact with food, it must be made from water that is safe and of adequate sanitary quality and shall be used only if it has been manufactured in accordance with current good manufacturing practice as set forth in this Part.
2. (2) Plumbing must be of adequate size and design, and shall be adequately installed and maintained, to carry adequate quantities of water to required locations throughout the milk plant.
(b) The water supply shall be approved as safe by the commissioner, and in the case of individual water systems, it shall contain a MPN (most probable number of Coliform organisms) of less than 1.1 per 100 ml by the multiple tube fermentation technique or less than 1.1 per 100 ml by the membrane filter technique or absent (less than 1 per 100 ml) by the chromogenic substrate (MMO-MUG) presence-absence method.
(c) There shall be no cross-connection between the safe water supply and any unsafe or questionable water supply, or any source of pollution through which the safe water supply might become contaminated. A connection between the water supply piping and a make-up tank (such as for cooling or condensing), unless protected by an air gap or effective back-flow preventor, constitutes a violation of this requirement.
(d) Condensing water for milk evaporators, and water used to produce vacuum and/or to condense vapors in vacuum heat processing equipment, shall be from a source complying with subdivision (b) of this section; provided that, when approved by the commissioner, water from sources not complying with subdivision (b) may be used when the evaporator or vacuum heat equipment is constructed and operated to preclude contamination of such equipment or its contents by condensing water or by water used to produce vacuum. Means of preventing such contamination include:
1. (1) use of a surface-type condenser in which the condensing water is physically separated from the vapors and condensate; or
2. (2) use of reliable safeguards to prevent the overflow of condensing water from the condenser into the evaporator. Such safeguards include a barometric leg extending at least 35 feet vertically from the invert of the outgoing condensing water line to the free level at which the leg discharges, or a safety shutoff valve, located on the water feed line to the condenser, automatically actuated by a control which will shut off the inflowing water when the water level rises above a predetermined point in the condenser. This valve may be actuated by water, air or electricity, and shall be designed so that failure of the primary motivating power will automatically stop the flow of water into the condenser.
(e) Condensing water for all milk evaporators, complying with subdivision (b) of this section, and water reclaimed from milk or milk products may be reused when all necessary means of protection are afforded and such condensing water or reclaimed water has been inspected and approved by the commissioner.
(f) New individual water supplies and water supply systems, which have been repaired or otherwise become contaminated, shall be disinfected before being placed in use. The supply shall be made free of the disinfectant by pumping to waste before any sample for bacteriological testing shall be collected.
(g) Water supplies which are otherwise found satisfactory but which are unable to meet the bacteriological standards set forth in this section shall be subjected to continuous disinfection by a method and with equipment acceptable to the commissioner.
(h) Samples for bacteriological testing of individual water supplies shall be taken upon the initial approval of the physical structure, each six months thereafter, and when any repair or alteration of the water supply system has been made. Bacteriological examinations shall be conducted in an officially designated laboratory.
(i) Current records of water tests shall be kept on file by the permittee.