(A) An approved backflow device shall be installed on all connections to the public water supply as described in the Plumbing Code, 77 Ill. Adm. Code 890 and the Agency’s regulations prevention device shall be installed on each service line to a consumer’s water system serving premises, where in the judgment of the Superintendent, actual or potential hazards to the public water supply system exist.
(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 supply, unless such auxiliary supply is accepted as an additional source by the Superintendent of Water and the source is approved by the State Environmental Protection Agency;
(2) Premises on which any substance is handled which can create an actual or potential hazard to the public water supply system. This shall include premises having sources or systems containing process fluids or waters originating from the public water supply system which are no longer under the sanitary control of the Superintendent of Water;
(3) Premises having internal cross-connections that, in the judgment of the Superintendent of Water and/or the Cross-Connection Control Device Inspector, 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 or cross-connections being established or reestablished.
(C) An approved backflow device shall be installed on all connections to the public water supply as described in the Plumbing Code, 77 Ill. Adm. Code 890 and the Agency’s regulations 35 Ill. Adm. Code 653. In addition, 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 Superintendent of Water determines that no actual or potential hazard to the public water supply system exists:
(1) Hospitals, mortuaries, clinics, nursing homes;
(2) Laboratories;
(3) Piers, docks, waterfront facilities;
(4) Sewage treatment plants, sewage pumping stations or storm water pumping stations;
(5) Food or beverages 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;
(11) Pesticide, or herbicide or extermination plants and trucks; and
(12) Farm service and fertilizer plants and trucks.
(1999 Code, § 38-3-43)