 Annual backflow notices will be mailed beginning
Friday, April 10, 2026
Annual backflow notices will be mailed beginning Friday, April 10, 2026. The information below provides an overview of the Backflow Program.
What is the notice card for?
The courtesy notice card is to inform you that your Backflow Prevention Assembly is due for its required annual test.
Do I need to keep the notice card if I received one?
Yes. Please retain the notice card, as it will assist your certified tester in completing and submitting the required report. The work order number provided is necessary for online submission.
Why am I receiving this notice?
If you receive a notice card, you are listed as the owner of a Backflow Prevention Assembly. Backflows prevent contamination of public drinking water; because of this, Washington State and the EPA legally require annual testing.
How do I test my backflow assembly?
The Water Division maintains a list of certified backflow testers available for contact. Once a test has been scheduled, the selected tester will conduct the backflow test and submit the results directly to the Water Division.
If you have any further questions, you can reach our Regulatory Compliance office at
509-527-4370 or email cccp@wallawallawa.gov
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