583 Cross Connection Control of Potable Water Supply

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City: City of Zephyrhills Utilities Department, Pasco County, Florida. Cross-Connection: A connection between a potable water system and a system of unknown qualify. Cross connections are classified as either High Hazard or Low Hazard. Distribution System: Piping system owned and operated by the water purveyor for the purpose of providing potable water to the community. Fire System: Water system designed for the sole purpose of providing water for fire protection. Hazard-health: A cross-connection or potential cross-connection involving any substance that could, if introduced in the potable water supply, cause death, illness, spread disease, or have a high probability of causing such effects. Hazard-nonhealth: A cross-connection or potential cross-connection involving any substance that generally would not be a health hazard but would constitute a nuisance or be aesthetically objectionable, if introduced into the potable water supply. Nonpotable Water: Water which is not certified as fit for human consumption. Potable Water: Water which has been treated, tested, and certified as fit for human consumption. Potable Water System: Water system designed for the sole purpose of providing drinking water. Water Purveyor: Authority providing drinking water to the community. Section 26-44: Cross-Connection Control Requirements: Service Connections: All connections to the City system shall be designed, installed, and maintained in a manner to prevent contamination of the distribution system. A backflow prevention assembly may be required at the service connection as a method of on-site containment. Section 26-45: Backflow Prevention Assemblies and Applications: Residential Dual Check Valve Assembly: A compact unit manufactured with two independent spring actuated check valves. The residential dual check is acceptable only as added back-flow prevention in areas served by reuse systems defined in Chapter 17-610, Part III, F.A.C., when the cross-connection control program identifies activities specific to (5) (a) and (5) (b) of this section. Reduced Pressure Zone (RPZ) Assembly: This device may be utilized in a high hazard situation when either back-pressure or backsiphonage may occur. Double Check Value Assembly (DCVA): This device may be used in a low hazard situation when either backpressure or backsiphonage may occur. Pressure Vacuum Breaker(PVB): This device may be utilized in a high hazard situation when backsiphonage may occur. This assembly is used primarily with lawn irrigation systems. Atmospheric Vacuum Breaker (A VB): This device may be used in backsiphonage situations only. Specific conditions must be met to insure the effectiveness of the installation. Section 26-46: Installation of Backflow Prevention Devices: Location: The primary location for all backflow assemblies shall be directly behind the 2 , °R32.20P0925