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Backflow testing & prevention
Annual certification tests, repairs, and new backflow assemblies for homes, businesses, irrigation and fire lines across the greater Portland area.
Got a test notice in the mail?
That letter from your water district isn’t junk. Oregon requires an annual test on every backflow assembly, performed by a certified tester, with results filed to your district by the deadline on the notice. Miss it and the district can follow up with fines or, eventually, a water shut-off.
We make it painless: schedule a time, we test the assembly, and we submit the paperwork to your district for you. Most residential tests take under half an hour, and for many assemblies you don’t even need to be home.
What backflow prevention actually does
Your backflow assembly is a one-way gate between your property’s water (irrigation lines, fire sprinklers, commercial equipment) and the public drinking supply. If pressure ever drops in the main (a water main break, heavy hydrant use), water can get pulled backwards. The assembly stops fertilizer, bacteria, or anything else on your side from siphoning into the neighborhood’s drinking water. That’s why the annual test exists: a valve that fails silently protects no one.
What we handle
- Annual certification testing. Residential and commercial, with results filed to your water district.
- Repairs and rebuilds. If your assembly fails the test, we can usually repair or rebuild it on the same visit and retest immediately.
- New installations. Backflow preventers for new irrigation systems, fire lines, and commercial connections, installed to code.
- Multiple assemblies. Property managers with several devices across sites: we can test them in one scheduled run and file everything together.
Common questions
How often does my backflow assembly need testing?
Once a year, per Oregon requirements. Your water district sets the deadline and sends the notice. Some districts also require a test right after a new assembly is installed or repaired.
What happens if my assembly fails the test?
Failing is common for older assemblies and usually means worn internal parts, not a full replacement. In most cases we can rebuild the assembly during the same visit, retest it, and file a passing result: one trip instead of three.
Do I need to be home for the test?
Usually not, as long as we can reach the assembly. Most are outside near the meter or in an irrigation box. We’ll confirm access when you schedule.
How much does a backflow test cost?
Call or text us for current pricing at 503-888-3088. For a standard residential assembly it’s a quick, flat-rate visit, and we’ll quote it over the phone before anything is scheduled.
Get your test scheduled before the deadline.
Have your district notice handy if you’ve got it. The assembly type and due date on it tell us everything we need.