Your water utility (also called the “purveyor”) is whoever sends your water bill. Pick a city to see how its program works.
Your water utilitySeattle Public Utilities
How reports get filedTesters submit through SPU’s SAMS tester portal (the utility moved off email-only submissions). We register our BAT card and test-kit calibration with SPU every year, so your report is never bounced back.
Program rule worth knowingMissed tests can bring SPU non-compliance charges and, eventually, water shutoff — SPU’s reminders don’t shift the responsibility off the owner.
How reports get filedCertified testers submit results through Bellevue’s online tester portal. Your report goes in the same day we test.
Program rule worth knowingAny lawn irrigation or fire sprinkler system in Bellevue needs a backflow assembly — and that assembly needs a passing test every year.
How reports get filedLynnwood accepts reports by email or through its online Backflow Preventer Inspection and Field Test Report form. We file it for you.
Program rule worth knowingEvery assembly must be registered with the City, and an incomplete test report isn’t accepted.
Your water utilitySeattle Public Utilities / North City Water District
How reports get filedFor SPU customers we file through SPU’s SAMS tester portal; for North City customers we submit directly to the District.
Program rule worth knowingShoreline is split between two utilities — Seattle Public Utilities west of I-5 and North City Water District to the east — and each runs its own backflow program.
How reports get filedWe’re registered for Issaquah’s Tokay WebTest portal and enter your results the day we test.
Program rule worth knowingIssaquah only accepts reports through its Tokay WebTest portal (since January 1, 2023) and will terminate service for untested assemblies.
Your water utilityHighline Water District (and others)
How reports get filedHighline accepts test reports by email at its backflow address. We send yours the day we test.
Program rule worth knowingHighline Water District takes test reports by email and serves Burien, Des Moines, SeaTac, Normandy Park and parts of Kent, Tukwila and Federal Way.
Your water utilityCity of Tukwila Water Utility / Highline Water District
How reports get filedWe submit your report to the City of Tukwila or Highline Water District, depending on who serves your address.
Program rule worth knowingTukwila runs its own water utility for residential, commercial and industrial customers — and parts of the city are on Highline Water District.
How reports get filedWe submit test results to the City of Auburn’s cross-connection program.
Program rule worth knowingAuburn requires premises isolation on every water service that isn’t a single-family home — and on single-family homes with irrigation.
Your water utilityLakehaven Water & Sewer District
How reports get filedWe enter your test results in Lakehaven’s online Tokay test-report portal.
Program rule worth knowingLakehaven Water & Sewer District takes backflow test reports online through its Tokay portal and focuses on premises isolation.
How reports get filedWe submit your test report to the City of Edmonds (or to your district, if a district serves your address).
Program rule worth knowingEdmonds runs its own water distribution system (supplied through Alderwood Water & Wastewater District) with its own cross-connection rules under ECC 7.20.
How reports get filedWe file with Tacoma Water’s Water Quality section the day we test.
Program rule worth knowingUniversity Place is largely served by Tacoma Water — sign up for its Authorized Tester Program and your notice comes straight to us.
How reports get filedFor repairs, retests and properties outside the District’s program, we file reports with the District or with whichever utility serves your address.
Program rule worth knowingLakewood Water District runs a coordinated testing program through a contracted tester for customers enrolled in it.
Your water utilityCheck the name on your water bill
Good newsEvery Washington utility follows the same state rule (WAC 246-290-490): test at installation, after repair, and every year. We’re set up with utilities across King, Snohomish and Pierce counties and file reports however yours requires.
