2010 JANUARY - Laserfiche WebLink

Sections: 14.16.010 14.16.020 14.16.030 14.16.040 14.16.050 Chapter 14.16 REGULATIONS FOR PROTECTION FROM WATER CONTAMINATION Purpose. Responsibility. Definitions. Requirements —Water system. Policy. 14.16.010 Purpose. The purpose of this chapter is: A. To protect the public potable water supply of the city from the possibility of contamination or pol- lution by isolating within its customers' internal distri- bution system(s) or its customers' private water sys- tem(s) such contaminants or pollutants which could backflow or hack- siphon into the public water supply system and by isolating contaminants or pollutants of potential intermittent, temporary and emergency users of the water system, including but not limited to use of fire hydrants or blow -offs; and B. To promote the elimination or control of existing cross - connections actual or potential, between its customers' in -plant potable water system(s) and non - potable water systems, plumbing fixtures and industrial piping systems; and C. To provide for the maintenance of a continu- ing program of cross - connection control which will sys- tematically and effectively prevent the contamination or pollution of all potable water systems. (Ord. 1073 § 3, 1983: prior code § 2 -16.48 (1)) 14.16.020 Responsibility. The operations services director shall be responsi- ble for the protection of the public potable water distri- bution system from contamination or pollution due to the backflow or back - siphonage of contaminants or pol- lutants through the water service connection. If, in the judgment of the operations services director, an ap- proved backflow prevention device is required at the city's water service connection to any customer's prem- ises, for the safety of the water system, the operations services director or designated agent shall give notice in writing to the customer to install such an approved back- flow prevention device at each service connection to his or her premises. The customer shall immediately install such approved device or devices at his or her own ex- pense; and failure, refusal or inability on the part of the customer to install the device or devices immediately 385 14.16.010 shall constitute a ground for discontinuing water service to the premises until such device or devices have been properly installed. (Ord. 2000 § 1, 2009; prior code § 2- 16.48 (2)) 14.16.030 Definitions. A. "Air -gap" means the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of the vessel. An approved air -gap shall be at least double the diameter of the supply pipe, measured vertically, above the top of the rim of the vessel, and, in no case less than one inch. When an air -gap is used at the service connection to prevent the contamination or pollution of the public potable water system, an emer- gency bypass shall be installed around the air -gap sys- tem and an approved reduced pressure principle device shall be installed in the bypass system. B. "Approved" means accepted by the opera- tions services director as meeting an applicable specifi- cation stated or cited in this chapter, or as suitable for the proposed use. C. "Auxiliary water supply" means any water supply on or available to the premises other than the purveyor's approved public potable water supply. These auxiliary waters may include water from another pur- veyor's public potable water supply or any natural source(s) such as a well, spring, river, stream, harbor, etc., or "used waters" or "industrial fluids." These wa- ters may be polluted or contaminated or they may be objectionable and constitute an unacceptable water source over which the water purveyor does not have sanitary control. D. "Backflow" means the flow of water or other liquids, mixtures or substances under pressure into the distributing pipes of a potable water supply system from any source or sources other than its intended source. E. "Backflow preventer" means a device or means designed to prevent backtlow or back - siphonage. F. "Back - siphonage" means the flow of water or other liquids, mixtures or substances into the distrib- uting pipes of a potable water supply system from any source other than its intended source caused by the sud- den reduction of pressure in the potable water supply system. G. "Contamination" means an impairment of the quality of the potable water by sewage, industrial fluids or waste liquids, compounds or other materials to a degree which creates an actual hazard to the public (Plca sanlon Supp. No. 3, 1 -10)