High-hazard protection
- Air gaps (AG)
- Reduced Pressure Backflow Assemblies (RPBA)
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Cross-Connection Control Program
Asotin County PUD administers a cross-connection control program to protect the drinking-water distribution system. A cross-connection can allow non-drinking water or contaminants to flow backward into customer plumbing or the public water system.
Backflow prevention assemblies are mechanical devices installed where a drinking-water supply connects to a non-drinking-water system. Customers are responsible for maintaining required assemblies and arranging testing when applicable.
Backflow Prevention Assemblies
Other approved assemblies
- Double Check Valve Assemblies (DCVA)
- Double Check Detector Assemblies (DCDA)
- Pressure Vacuum Breaker Assemblies (PVB)
- Spill Resistant Backflow Assemblies (SVB)
- Atmospheric Vacuum Breakers (AVB)
Annual Testing
Washington State Department of Health regulations require backflow assemblies to be tested annually by a certified backflow assembly tester.
Backflow Assembly Testers List
Certified backflow assembly testers serving the Asotin County PUD area.
Cross-Connection Health Hazards
Public information about cross-connections and drinking-water health hazards.
Household Contamination Hazards
Public information about household contamination hazards and drinking-water protection.
Lawn Irrigation and Backflow Prevention
Backflow prevention guidance for lawn irrigation systems.