I received a letter from the City notifying me my backflow assembly needs to be tested. Is there a list of certified testers?

For our residents' convenience, the City maintains a list of Certified Backflow Testers (PDF) (updated February 2022).

If you experience problems with any of the testers on the list please notify the City's Cross Connection Specialists at 509-967-5434 or by email.

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1. What is a cross-connection?
2. I received a letter from the City notifying me my backflow assembly needs to be tested. Is there a list of certified testers?
3. What is considered a potential hazard?
4. I want to connect my underground irrigation system to the City potable water in addition to the CID or the KID, what is the proper way to connect to both systems?
5. I am installing an underground sprinkler system utilizing only City potable water. How do I properly connect my underground sprinkler system to the City's potable water?
6. I am going to disconnect my underground sprinkler system from the City potable water system. How do I properly disconnect from the City's potable water system?
7. What happens if I do not have my backflow device tested?