Ord 2011-006 - Laserfiche WebLink

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Backflow means the reversal of flow of water and/or mixtures of water and other liquids, gases, or other substances from a customer's side of the service connection into the city water system. Backflow may occur under either a backpressure or back siphonage condition. Backflow prevention assembly or assembly assemblies means a device or aggregation of devices designed to prevent backflow, including reduced pressure backflow assemblies, double check valve assemblies, atmospheric vacuum breakers, pressure vacuum breaker assemblies or an air gap. Backpressure means any situation where the pressure in a customer's system is higher than in the city water system. Back siphonage occurs when the pressure in the public water system becomes less than that of the customer's system due to a vacuum in the public system. Building official means the person designated as the building official in the building code adopted in chapter 14 of this Code. Bypass means a connection from the city side of a backflow prevention assembly to the customer side of the assembly for the purpose of diverting the water around the assembly while it is being repaired or replaced. 40 Certified backflow prevention assembly tester or certified tester means a person who has received certification as a backflow prevention assembly tester from the T NR CG TCEO by successfully completing a T#1 G TCE - approved certification school. Check valve means a valve that seats readily and completely to eery cease the flow of water. City water system means the entire potable water distribution system of the city, including, without limitation, all pipes, facilities, valves, pumps, conduits, tanks, receptacles and fixtures and appurtenances between the water supply source and the point of delivery, used by the city to produce, convey, deliver, measure, treat or store potable water for public consumption or use. Contamination means the presence of any foreign substance (organic, inorganic, radiological or biological) in water that tends to degrade its quality so as to constitute a hazard or impair the usefulness of the water. Contamination includes both hazardous contaminants and pollutants. Cross connection means any physical connection between the city water system and another water system or source, through which backflow, back pressure or aspiration may occur. • 3