Burien · King County
Backflow testing in Burien
Much of Burien gets its water from Highline Water District, which serves a big swath of South King County. Highline asks owners to test annually and send results to the District — we handle the whole loop.
Highline Water program
How Burien’s backflow program works
The short version, summarized from the utility’s own cross-connection control materials.
Source: Highline Water District (and others) · verified October 2026 ↗Highline Water District serves parts of Burien, Des Moines, Federal Way, Kent, Normandy Park, SeaTac and Tukwila.
Annual testing by a Washington State-certified tester is required.
Highline publishes a partial list of certified testers but makes no recommendation about any of them.
Report submission
Highline accepts test reports by email at its backflow address. We send yours the day we test.
Questions for the utility: backflow@highlinewater.org · (206) 824-0375
On the ground
What we see in Burien
Every city’s housing stock and commercial mix shapes what’s in the meter box.
Downtown Burien commercial
Restaurants, salons, dental and medical offices along 152nd Street are classic RP premises-isolation sites. We test before opening hours.
Neighborhoods
Serving all of Burien
Not all of Burien is on Highline Water District — some addresses are served by other water districts. Your bill will say which.
- Olde Burien
- Seahurst
- Gregory Heights
- Three Tree Point
- Boulevard Park
- Shorewood
- Manhattan
- Highline
FAQ
Burien backflow questions
01 Who can test my backflow assembly in Burien?
02 How do backflow test reports get submitted to Highline Water?
03 How much does backflow testing cost in Burien?
04 What if my assembly fails in Burien?
Field test report · next due
Burien test due? We’ll handle it.
Book online in two minutes. We test, repair if needed, and file the report with your water utility — and remind you next year.