Federal Way · King County
Backflow testing in Federal Way — Lakehaven Water & Sewer
Most of Federal Way gets its water from Lakehaven Water & Sewer District. Lakehaven sends a notice before your report is due and takes results through an online Tokay portal. Its program leans on premises isolation: an assembly right after the meter.
Lakehaven program
How Federal Way’s backflow program works
The short version, summarized from the utility’s own cross-connection control materials.
Source: Lakehaven Water & Sewer District · verified October 2026 ↗State law requires assemblies to be field tested after installation and annually after that.
Lakehaven sends reminder notices ahead of report due dates.
DCVAs are used for non-health-hazard situations; RPBAs for health-hazard cross-connections.
Lakehaven emphasizes premises isolation — assemblies installed immediately downstream of the meter.
Report submission
We enter your test results in Lakehaven’s online Tokay test-report portal.
Questions for the utility: (253) 946-5427
On the ground
What we see in Federal Way
Every city’s housing stock and commercial mix shapes what’s in the meter box.
Retail & multifamily
The Commons area, Pacific Highway retail and a large stock of apartment communities mean lots of RP, DCVA and fire-line assemblies under property management.
Services in Federal Way
Neighborhoods
Serving all of Federal Way
Some Federal Way addresses near the north end are on Highline Water District.
- City Center
- Twin Lakes
- Dash Point
- Steel Lake
- Mirror Lake
- Lakota
- Camelot
- West Campus
FAQ
Federal Way backflow questions
01 Who can test my backflow assembly in Federal Way?
02 How do backflow test reports get submitted to Lakehaven?
03 How much does backflow testing cost in Federal Way?
04 What if my assembly fails in Federal Way?
Field test report · next due
Federal Way 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.