The following words and phrases used in this chapter shall have the following meaning unless a different meaning clearly appears from the context:
APPROVED BACKFLOW ASSEMBLY: An assembly accepted by the Utah state department of environmental quality, division of drinking water, as meeting an applicable specification or as suitable for the proposed use.
AUXILIARY WATER SUPPLY: Any water supply on or available to the premises other than the purveyor's public water supply will be considered as an auxiliary water supply. These auxiliary waters may include water from another purveyor's public potable water supply or any natural source, such as a well, spring, river, stream, etc., or "used waters" or "industrial fluids". These waters may be contaminated or polluted or they may be objectionable and constitute an unacceptable water source over which the public works director does not have authority for sanitary control.
BACK PRESSURE: The flow of water or other liquids, mixtures or substances from a region of high pressure to a region of low pressure into the water distribution pipes of a potable water supply system from any source other than the intended source.
BACK SIPHONAGE: The flow of water or other liquids, mixtures or substances under vacuum conditions into the distribution pipes of a potable water supply system from any source other than the intended source, caused by the reduction of pressure in the potable water system.
BACKFLOW: The reversal of the normal flow of water caused by either back pressure or back siphonage.
BACKFLOW PREVENTION ASSEMBLY: An assembly or means designated to prevent backflow. Specifications for backflow prevention assemblies are contained within the adopted codes, and in the cross connection control program for Utah maintained by the division of drinking water.
CONTAMINATION: A degradation of the quality of the potable water supply by sewage, industrial fluids or waste liquids, compounds or other materials that may create a health hazard.
CROSS CONNECTION: Any physical connection or arrangement of piping or fixtures that may allow nonpotable water or industrial fluids or other material of questionable quality to come into contact with potable water inside a water distribution system. This would include temporary conditions, such as swing connections, removable sections, four-way plug valves, spools, dummy sections of pipe, swivel or changeover devices or sliding multiport tubes or other plumbing arrangements.
CROSS CONNECTION, CONTAINED: The installation of an approved backflow assembly at the water service connection to any customer's premises where it is physically and economically infeasible to find and permanently eliminate or control all actual or potential cross connections within the customer's water distribution system; or, it shall mean the installation of an approved backflow prevention assembly on the service line leading to and supplying a portion of a customer's water system where there are actual or potential cross connections that cannot be effectively eliminated or controlled at the point of the cross connection (isolation).
CROSS CONNECTION, CONTROLLED: A connection between a potable water system and a nonpotable water system with an approved backflow prevention assembly properly installed and maintained so that it will continuously afford the protection commensurate with the degree of hazard.
PUBLIC WORKS DIRECTOR: The person designated to be in charge of the water department of the city, is vested with the authority and responsibility for the implementation of an effective cross connection control program and for the enforcement of the provisions of this chapter. (Ord. 6-17-2003B, 6-17-2003)