(A) An approved backflow prevention device shall be installed on each service line to a consumer’s water system serving premises, where, in the judgment of the supplier of water or the Director, a health, pollution, or system hazard to the public water system exists.
(B) An approved backflow prevention device shall be installed on each service line to a consumer’s water system serving premises where the following conditions exist:
(1) Premises having an auxiliary water system, unless such auxiliary system is accepted as an additional source by the supplier of water and the source is approved by the Director;
(2) Premises on which any substance is handled in such a fashion as to create an actual or potential hazard to a public water system. This shall include premises having sources or systems containing process fluids or waters originating from a public water system which are no longer under the control of the supplier of water;
(3) Premises having internal cross-connections that, in the judgment of the supplier of water, are not correctable, or intricate plumbing arrangements which make it impractical to determine whether or not cross-connections exist;
(4) Premises where, because of security requirements or other prohibitions or restrictions, it is impossible or impractical to make a complete cross-connection survey; and
(5) Premises having a repeated history of cross-connections being established or re-established.
(C) An approved backflow prevention device shall be installed on each service line to a consumer’s water system serving, but not necessarily limited to, the following types of facilities, unless the Director determines that no health, pollution or system hazard to the public water system exists.
(1) Hospitals, mortuaries, clinics and nursing homes;
(2) Laboratories;
(3) Piers, docks and waterfront facilities;
(4) Sewage treatment plants, sewage pumping stations, or storm water pumping stations;
(5) Food or beverage processing plants;
(6) Chemical plants;
(7) Metal plating industries;
(8) Petroleum processing or storage plants;
(9) Radioactive material processing plants or nuclear reactors;
(10) Car washes; and
(11) Others specified by the Director.
(D) An approved backflow prevention device shall be installed at the consumer’s expense, at any point of connection between a public water system or a potable consumer’s water system and an auxiliary water system, unless such system is accepted as an additional source by the supplier of water and sources approved by the Director.
(E) The backflow devices shall be installed by the Water and Sewer Department personnel, at the consumer’s expense, and checked routinely by the Water and Sewer Department personnel.
(Prior Code, § 1040.05) (Ord. 482, passed 6-17-1985)