Backflow Testing Services in Spokane, Washington
Finding a reliable backflow testing professional in Spokane, Washington is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 13 backflow testing companies serving Spokane and surrounding communities including Spokane Valley, Pullman, Moses Lake.
Whether you need annual backflow testing, RPZ (Reduced Pressure Zone) valve inspection, or cross-connection control services, the providers listed below offer professional testing services for both residential and commercial properties throughout the Spokane area.
Most water authorities in Washington require annual testing and reporting for all backflow prevention assemblies. A certified backflow tester will inspect your devices, perform the required differential pressure tests, and file compliance reports with your local water authority.
Browse the listings below to compare ratings, read customer reviews, and contact backflow testing professionals near Spokane directly. Use the filters above to narrow results by rating, review count, or specific services like RPZ testing and preventer installation.
Data source: Google Maps. Always verify licensing with your local water authority.
13 listed providers

Einstein Pros Plumbing Spokane Washington
Spokane, WA · < 1 mi

Marko's Sprinklers
Testing Verified · Spokane, WA · 2 mi

Shaw Plumbing Heating & Air Conditioning
Testing Verified · Spokane, WA · 3 mi
Roto-Rooter Plumbing & Water Cleanup
Spokane Valley, WA · 5 mi

Plumber Faucets N' Stuff
Testing Verified · Spokane Valley, WA · 9 mi
Helpful resources
Frequently Asked Questions About Backflow Testing in Spokane
If a backflow preventer fails its annual test, the certified tester will diagnose the issue — often a worn check valve, damaged disc, or fouled relief valve. Most testers in Spokane can repair the device on site and re-test it the same day. Your water authority may require the passing report within a set deadline.
Cross-connection control prevents contaminated water from flowing backwards into the clean water supply. Backflow prevention devices are installed at cross-connection points to protect public health. Regular testing ensures these devices function properly. Many municipalities in Washington require cross-connection control programs for commercial properties and irrigation systems.
Many municipalities in Washington require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Spokane can confirm the exact testing schedule and deadlines for your area. Failing to test on time may result in fines or water service interruption.
Some certified testers near Spokane offer same-day or emergency scheduling for urgent situations such as a failed device, a compliance deadline, or a new construction inspection. Check individual provider listings above for availability, or request a quote to find a tester who can accommodate your schedule.
Look for testers with active state certification, strong Google reviews, and experience with your type of backflow preventer (PVB, DCVA, or RPZ). Ask whether they file compliance reports with your local water authority and request a written estimate before scheduling. Our directory lists testers near Spokane with real customer reviews.
Nearby Cities in Washington
For Providers
Own a Backflow Testing Business?
Claim your listing to manage your profile, track leads, and get premium placement.



