(a) Regulation. Water under pressure shall be installed in all rooms or areas where food or drink is prepared or where utensils are washed. The water supply shall conform to the regulations of the state board of health and mental hygiene.
(b) Satisfactory Compliance.
(1) Water under pressure is installed in all rooms or areas in which food or drink is prepared or utensils are washed.
(2) The water supply is capable of furnishing an adequate quantity of water at pressures necessary for optimum performance of equipment during times of operation.
(3) The water supply conforms with the construction, operation and sanitation standards of the state board of health and mental hygiene. The water supply is protected against the backflow of waste and other water from unapproved sources.
(4) Class III itinerant establishments are equipped with water connections and operated only when connected to an approved water supply or are equipped with a tank of at least fifty gallons capacity.