The short version: book a state-certified backflow tester before the due date on the notice. They test the assembly and send the report to your water utility. If it passes, you’re done for the year.
Why you got it
Your water utility (your “purveyor”) keeps a record of every testable backflow assembly in its system. Washington requires each one to be tested at least once a year, so the purveyor mails the owner a notice as the due date approaches. If you’re a new owner, the notice may be the first you’ve heard of the assembly. That’s normal: responsibility transfers with the property.
What’s on the notice
| Item | What it tells you |
|---|---|
| Assembly type | RPBA, DCVA, PVBA, DCDA and so on. What these mean |
| Size & serial number | Lets the tester confirm it’s the right assembly |
| Location | Where the purveyor thinks it is: front yard, basement, riser room |
| Due date | When the passing test report needs to be on file |
| How to submit | Usually handled by your tester, not you |
What to do, step by step
- Don’t set it aside. Put the due date on your calendar today.
- Find the assembly if you can, or just give the notice to your tester.
- Book a certified Backflow Assembly Tester. Only DOH-certified testers can submit results.
- Make it reachable: clear the valve box, unlock the room, and note gate codes and pets.
- If it fails, approve a repair so it can be fixed, retested and reported.
- Keep your copy of the passing report, then relax until next year.
Special situations
The notice lists an assembly I can’t find
Assemblies hide in buried valve boxes, crawlspaces and behind shrubs. A tester can usually track it down from the notice details. If it was removed or replaced, the tester can document what’s actually there so the purveyor updates its records.
I just bought the house
The requirement moves to the new owner, even if the previous owner got the notice. Book a test before the due date. It’s also a good time to learn where your assembly is and how to winterize it.
The due date has already passed
Call a tester right away and tell them it’s overdue. Most purveyors send reminders before taking stronger action, but you don’t want to test how patient yours is.
I got a “final notice” or a shut-off warning
Treat it as urgent. Purveyors have the authority to discontinue water service for non-compliance. Call our 24/7 line at (425) 361-8886 and we’ll prioritize your test and reporting.
I rent the property
Forward the notice to your landlord or property manager. The owner is responsible, but you’ll want it handled so your water isn’t affected.
Hand us the notice. We’ll take it from there.
Certified testing, report filing and a copy for your records, anywhere from Mount Vernon to Tacoma.