§ 51.073 WHERE PROTECTION REQUIRED.
   (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