Bothell · King / Snohomish County
Backflow testing in Bothell — City, Northshore, Alderwood or Silver Lake
Bothell straddles two counties and several water providers. The City of Bothell runs its own backflow program, while other parts of town are served by districts like Northshore, Alderwood or Silver Lake. We work with all of them, and we’ll tell you which one is yours.
City of Bothell program
How Bothell’s backflow program works
The short version, summarized from the utility’s own cross-connection control materials.
Source: City of Bothell (plus several districts) · verified October 2026 ↗City of Bothell water customers must have their backflow assemblies inspected and tested every year (Bothell Municipal Code 18.07).
The City publishes a certified tester list, updated each March.
Multiple water districts operate within and around Bothell, each with its own program — check your bill.
Report submission
City of Bothell test reports are filed through the VEPO online portal. District customers’ reports go to their district’s system.
Questions for the utility: backflow@bothellwa.gov · (425) 806-6868
On the ground
What we see in Bothell
Every city’s housing stock and commercial mix shapes what’s in the meter box.
Canyon Park & North Creek business parks
Biotech, labs and light manufacturing are classic high-hazard connections. Expect RP premises isolation plus internal protection on lab and process water — we test it all on one visit.
Neighborhoods
Serving all of Bothell
Your water bill tells you whether you’re a City of Bothell, Northshore, Alderwood or Silver Lake customer.
- Downtown Bothell
- Canyon Park
- North Creek
- Country Village
- Thrasher’s Corner
- Maywood Hills
- Westhill
- Queensborough
FAQ
Bothell backflow questions
01 Who can test my backflow assembly in Bothell?
02 How do backflow test reports get submitted to City of Bothell?
03 How much does backflow testing cost in Bothell?
04 What if my assembly fails in Bothell?
Field test report · next due
Bothell 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.