Ord 2001-058 - Laserfiche WebLink

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connection or assembly is located within the city limits of San Marcos or in the city's certificated water service area, and regardless of whether the connection or assembly is for a retail, wholesale, or other customer or user of the city potable water supply system. Sec. 86.553. Definitions. Air gap separation means a physical separation between the free flowing discharge end of a city water system pipeline and an open or unpressurized receiving line or vessel. Approved assembly is a backflow prevention assembly that has been approved, manufactured, tested and approved in accordance with the standards adopted by the A WW A, or approved and listed by the University of Southern California Foundation for Cross Connection Control and Hydraulic Research. Auxiliary water supply means any water supply on or available to a customer's premises from a source other than directly through the city water supply. Auxiliary water supplies include all of the following: (1) Water from another public water system. (2) Water from a natural source, such as a well, spring, pond, river or creek. (3) Reclaimed water. (4) Any water supplied by a public water system, including the city water system, that has passed through a point of delivery and is no longer controlled by the public water system. AWWA means American Water Works Association. 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 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. Certified back/low prevention assembly tester or certified tester means a person who has received certification as a backflow prevention assembly tester from the TNRCC by successfully completing a TNRCC-approved certification school. Check valve means a valve that seats readily and completely to completely 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. C:\TEMP\backtlow.doc 2