March Newsletter
1500 Scenic Way, Clarkston, WA(509) 758-1010
Office Hours: Mon - Fri 7:30AM to 4:30PM

Cross Connection Control Program:
Backflow Prevention

The Asotin County PUD protects your water by administering a cross connection control program (CCCP). 

It is our commitment to provide you with the highest quality drinking water and to protect the water distribution system from contamination. The greatest public health risk lies in the introduction of a contaminant into the public water supply system through a cross-connection.

Backflow Prevention:

Backflow prevention devices are mechanical assemblies that help stop cross contamination of the clean water system. In order to prevent the occurrence of backflow, the PUD, City of Clarkston, Asotin County, and the State of Washington Department of Health regulations require the installation of backflow prevention devices on all non-drinking water systems.


Backflow Prevention Devices:

  • Air gaps (AG) – High Hazard
  • Reduced Pressure Backflow Assemblies (RPBA) – High Hazard
  • 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 that all backflow assemblies be tested on an annual basis by a certified backflow assembly tester (BAT). 


Additional Documents:

Contact Information:

For questions or for more information regarding backflow prevention, contact Craig Riehle at or at 509-758-1010.

Copyright © 2020 Asotin PUD | Website designed by Advantage Advertising, Inc.

1500 Scenic Way | PO Box 605 | Clarkston, WA
Mon - Fri 7:30AM to 4:30PM