Backflow Testing Near Me: Washington
Backflow Testing in Washington: Costs, Requirements & How to Find the Best Certified Testers
Washington State DOH issues BAT and CCS certifications under chapter 246-292 WAC. WAC 246-290-490 is one of the most detailed state CCC regulations in the nation. Annual testing is mandatory for all backflow assemblies. Seattle Public Utilities, Tacoma Public Utilities, and Washington Water serve the major metro areas. SwiftComply is widely used for electronic filing.
Why Backflow Testing Matters in Washington
Washington State DOH certifies both BATs (Backflow Assembly Testers) and CCS (Cross-Connection Control Specialists) under chapter 246-292 WAC. WAC 246-290-490 requires comprehensive cross-connection control programs including water system plans, hazard evaluations, and corrective action authority. Approved assemblies: USC-FCCCHR list. Annual testing required. Test reports must comply with WAC 246-292-036. Seattle Public Utilities files via email/form. Many WA utilities use SwiftComply for electronic submissions. Washington Water (per WAC 246-290-490), Tacoma Public Utilities, Spokane, and Everett serve major markets.
Washington Backflow Testing Law — The Plain-Language Version
WA DOH BAT certification required under chapter 246-292 WAC. USC-FCCCHR approved assemblies. Annual testing per WAC 246-290-490(7)(b) and WAC 51-56-0603.4.2. Test reports per WAC 246-292-036. Many utilities use SwiftComply. CCS required for water systems with specific program elements.
Full Washington Backflow Law Details
Complete regulatory breakdown, certification requirements, and major utility programs: getyourbackflowtested.com/backflow-laws/washington-state-backflow-prevention-laws
How Much Does Backflow Testing Cost in Washington?
Seattle metro (SPU, Bellevue, Redmond, Kirkland, Renton, Tukwila, SeaTac): $65 – $150 per assembly.
Tacoma / Pierce County: $65 – $145 per assembly.
Everett / Snohomish County: $65 – $145 per assembly.
Spokane metro: $60 – $140 per assembly.
Vancouver / Clark County: $60 – $140 per assembly.
Olympia, Bellingham, Yakima, Tri-Cities: $60 – $140 per assembly.
How Long Does Backflow Testing Take in Washington?
Standard tests: 25–45 minutes. Seattle metro residential: 50–80 minutes. SwiftComply: confirm your tester is registered for utilities using that platform. SPU email/form submissions: confirm tester uses current SPU Backflow Preventer Inspection and Field Test Report form.
What to Expect on Test Day
Your tester arrives, locates your backflow assembly (typically near the water meter or service entrance), and connects calibrated differential pressure gauges to the test cocks. Water shuts off for 15–30 minutes during testing. You receive a signed test report immediately. Pass: results are filed with your utility. Fail: the tester identifies the fault and repairs or returns within the required compliance window. Always confirm your tester files results with your utility — request confirmation before they leave.
How We Vet Washington Backflow Testers — Our Selection Criteria
Every tester listed in our Washington city pages meets all of the following before inclusion:
WA DOH BAT certification: Verified under chapter 246-292 WAC.
SwiftComply or utility platform registration: Confirmed for the specific WA utility’s filing platform.
WAC 246-292-036 compliance: Test report content requirements confirmed.
Calibrated equipment + insurance: Standard.
Washington Cities and Areas We Cover
Seattle metro: Seattle, Bellevue, Redmond, Kirkland, Renton, Shoreline, Burien, SeaTac, Tukwila, Bothell, Edmonds, Lynnwood, Mountlake Terrace. Tacoma, Puyallup, Lakewood, Federal Way, Auburn, Sumner. Everett, Marysville, Mukilteo, Lynnwood, Bothell. Spokane, Spokane Valley, Cheney, Coeur d’Alene (WA side). Vancouver, Camas, Washougal, Ridgefield. Olympia, Lacey, Tumwater. Bellingham, Whatcom County. Yakima, Tri-Cities (Kennewick, Richland, Pasco). Statewide Washington.
Find a Certified Washington Backflow Tester Near You
getyourbackflowtested.com | Backflow Testing in Washington