A backflow test notice means your water district has an assembly on record at your property and needs a passing test report from a certified tester by the date on the letter. Hire a tester, have the assembly tested, and make sure the report is filed before the deadline. That's it.
What the notice is
California water suppliers must protect the public water system from contamination through cross-connections. Under the State Water Board's Cross-Connection Control Policy Handbook, they keep a record of every backflow prevention assembly in their service area and require each one to be tested at least once a year. The notice is your district's reminder for the assembly at your address.
What to do, step by step
- Find the due date and assembly details on the notice: address, assembly type, size, serial number and location if listed.
- Book a certified tester who is approved by your district. Share the notice so they bring the right parts.
- Give access. Gate codes, cage keys and a phone number are usually all that's needed.
- If it fails, approve the repair. It must be repaired and retested before a passing report can be filed. See backflow repair.
- Confirm the report was filed and keep your copy.
What if I miss the deadline?
Most districts follow up with a second letter, then a final notice. Some charge fees after that, and some can shut off service. If your date is close, say so when you call and we'll try to fit you in sooner.
What if I don't think I have a backflow preventer?
Look near the water meter, along the front of the building, beside irrigation valves, or at the fire sprinkler riser. If you can't find it, a tester can locate it. If it was removed, the district must be notified.
Does the notice mean something is wrong?
Not at all. Everyone with a device gets one every year. It doesn't mean anything failed or that your water has a problem.
Related questions
Is backflow testing really every year?
In California, backflow prevention assemblies must be tested at least once a year. They also need a test right after installation, after any repair, and after being moved. Your water district sets the exact due date and usually mails a notice before it.
What if I miss my test deadline?
You'll usually get a second letter, then a final notice. After that some districts add fees, and some can turn off service. If your date is coming up, reach out and let us know.
Will you file the report for me?
Yes. We submit the test report to your water district in the format it requires and send you a copy for your records.