Backflow prevention devices shall be installed where, in the judgment of the Superintendent, the nature and extent of activities or the materials stored on the premises would present an immediate and dangerous hazard to health and/or be deleterious to the quality of the water should a cross-connection occur, even though such cross-connection does not exist at the time. Backflow prevention devices shall be installed under circumstances, including but not limited to the following:
A. Premises having an auxiliary water supply unless the quality of the auxiliary supply is in compliance with State Drinking Water Regulations 1 and is acceptable to the City Council.
B. Premises having internal cross-connections that are not correctable or intricate plumbing arrangements which make it impracticable to ascertain whether or not cross-connections exist.
C. Premises where entry is restricted so that inspections for cross-connections cannot be made with sufficient frequency or at sufficiently short notice to assure that cross-connections do not exist.
D. Premises having a repeated history of cross-connections being established or re-established.
E. Premises on which any substance is handled under pressure so as to permit entry into the public water supply or where a cross-connection could reasonably be expected to occur. This shall include the handling of process waters and cooling waters.
F. Premises where materials of a toxic or hazardous nature are handled in such a way that if back siphonage should occur, a serious health hazard might result.
G. The following types of facilities will fall into one of the above categories where a backflow prevention device is required to protect the public water supply. A backflow prevention device shall be installed at these facilities unless the City Council determines that no hazard exists:
Chemical plants using a water process
Food or beverage processing plants
Hospitals, mortuaries, clinics
Laboratories
Metal plating industries
Petroleum processing or storage plants
Piers and docks
Radioactive material processing plants or nuclear reactors
Sewage treatment plants
Others specified by the City Council
H. Other premises, as specified by the City Council, where backflow prevention devices are required to protect the public water supply. (Ord. 385, 7-1-80; 1994 Code)
Notes
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