(A) An approved backflow prevention device shall be installed between the service connection and the point of potential backflow into a consumer’s water supply system when, in the judgment of the Superintendent, a health, plumbing, pollution or system hazard exists.
(B) An approved backflow prevention device shall be installed when the following conditions are found by the Superintendent to exist:
(1) Premises on which any substance is handled in such a fashion as to create an actual or potential hazard to a public water supply system. This shall include premises having sources or systems containing process fluids or waters originating from a public water supply system which are no longer under the sanitary control of the owner;
(2) Premises having internal cross-connections that, in the judgment of the Superintendent, are not correctable, or there exist intricate plumbing arrangements which make it impracticable to determine whether or not cross-connections exist;
(3) Premises where, because of security requirements or other prohibitions or restrictions, it is impossible or impractical to make a complete cross-connection survey;
(4) Premises having a repeated history of cross-connections being established or re-established; and
(5) Premises having more than one customer service connection which could constitute a potential cross-connection.
(C) An approved backflow prevention device shall be installed on each service line to a customer’s water supply system serving the following types of facilities:
(1) Hospitals, mortuaries, dental clinics, nursing and convalescent homes, medical buildings;
(2) Testing laboratories, film laboratories, film development facilities;
(3) Sewage treatment plants, sewage pumping stations or stormwater pumping stations;
(4) Food or beverage processing plants;
(5) Chemical plants;
(6) Metal de-greasing, plating industries, machine tool plants, dye and metal processing or productions;
(7) Chemical and petroleum processing or storage plants;
(8) Car washes, automobile servicing facilities;
(9) Lawn irrigation systems and swimming pools;
(10) Laundries and dry cleaners;
(11) Packing houses;
(12) Power plants;
(13) Premises having radioactive materials such as laboratories, industries, hospitals;
(14) Rendering plants;
(15) Premises having a water recirculating system as used for boilers or cooling systems;
(16) Veterinary establishments, kennels, feed yards, stables, rodeo grounds, stockyards, pet grooming salons;
(17) Beauty salons, barbershops, massage parlors, health clubs;
(18) Fire suppression systems;
(19) Multistoried buildings greater than three stories in height;
(20) Schools, universities, colleges; and
(21) Other commercial or industrial facilities which may constitute potential cross-connection sites.
(Prior Code, § 6-128) Penalty, see § 51.999