Why do I have to test my backflow prevention assembly every year?
Backflow prevention assemblies protect your drinking water from potential sources of contamination. The only way to ensure they are working properly is to have them tested by a certified backflow assembly tester (BAT). The Uniform Plumbing Code (Section 603) and the Washington Administrative Code (Section 246-290-490) require annual testing of installed backflow prevention assemblies.

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1. Who can I contact if I have questions?
2. Why do I have to test my backflow prevention assembly every year?
3. Who can test backflow prevention assemblies?
4. I have my backflow assembly tested every year as required, but my neighbor says he has never heard of the testing requirement. Why is that?
5. I am not using my irrigation system anymore. Do I still need to test the backflow assembly?
6. What will happen if I choose not to test my backflow prevention assembly?