Backflow Testing Services in Tualatin, Oregon
Finding a reliable backflow testing professional in Tualatin, Oregon is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 16 backflow testing companies serving Tualatin and surrounding communities including King City, Lake Oswego, Wilsonville.
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 Tualatin area.
Most water authorities in Oregon 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 Tualatin 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.
16 listed providers
Oregon Backflow Testing, Llc
Testing Verified · Portland, OR · 2 mi
“Great quality service. Always promptly get back to you. The technicians take the time to explain things and do not rush along. Very professional.”
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Dynamic Backflow LLC
Testing Verified · Wilsonville, OR · 5 mi
“I didn’t realize how cities require all this paperwork … and I only recently saw it all. Dynamic Backflow handles the paperwork and bureaucratic nonsense seamlessly and in the background to where I…”
Read more on GoogleBennett Irrigation and Backflow Service
Testing Verified · Portland, OR · 6 mi
“I'm so glad I found Paul! He came out and saved our lawns and me from potentially huge irrigation bills. I have large property, 10 acres, probably an acre + of lawn and 16 zones systems which are 20…”
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Green Leaf Landscape LLC
Portland, OR · 8 mi
“I can’t say enough good things about Green Leaf Irrigation and Landscape! From start to finish, their team was professional, knowledgeable, and incredibly friendly. The installation crew arrived…”
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DeTemple CO
No reviews yet
Testing Verified · Milwaukie, OR · 8 mi

Proline Plumbing
Portland, OR · 10 mi
“What a phenomenal experience during one of the most stressful situations. Chris is an absolute rockstar…. He was fast, so courteous, explained everything, showed me every step of the way what he was…”
Read more on GoogleAmerican Backflow and Plumbing Services Inc
Testing Verified · Portland, OR · 11 mi
“Everything went great. All the things you expect from a service company such as American Plumbing. On time, did the work, tested the work, kept the area clean, etc, etc. All great stuff. Where…”
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D&F Plumbing, Heating and Cooling
Testing Verified · Portland, OR · 11 mi
Beavercreek Backflow LLC
Testing Verified · Beavercreek, OR · 13 mi
“Want to thank Matt at Beavercreek Backflow LLC who came out one day after I called for the inspection of my sprinkler system. He was friendly, fast, and charged a very reasonable price when others…”
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Flowcheck LLC
Testing Verified · Hillsboro, OR · 15 mi
“We’ve been using Flowcheck for a few years now to maintain our sprinkler system. We are on an annual plan for startup and shutdown including city required back-flow testing. They are very quick to…”
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Backflow Management Inc.
Testing Verified · Portland, OR · 17 mi
“Amazing! Garret and all staff. Hands down I had 0 confidence going into this and they obviously have permanently made an impact in my life because, guess what.. I passed! They are so insightful and…”
Read more on GoogleAccurate Backflow Testing
Testing Verified · Forest Grove, OR · 18 mi
“Very fast and easy service. Basically a test needed every year for my backflow water assembly required by the city and they make it simple. I give them a call, they schedule, they come out, attach an…”
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Frequently Asked Questions About Backflow Testing in Tualatin
RPZ (Reduced Pressure Zone) testing verifies that your reduced pressure backflow preventer is functioning correctly to protect your water supply from contamination. A certified tester uses specialized gauges to measure differential pressures across the assembly. RPZ devices are typically required for high-hazard connections.
Most jurisdictions in Oregon require backflow testers to hold a current certification from an approved training program, typically involving classroom instruction, a hands-on practical exam, and continuing education credits. Some municipalities maintain their own approved-tester lists. Always verify certification before hiring.
Residential tests typically involve a single PVB or DCVA device and are quicker to complete. Commercial properties in Tualatin often have multiple assemblies, RPZ devices, and fire-line backflow preventers that require more time and specialized equipment. Pricing and scheduling may differ for each type.
Many certified backflow testers in Tualatin will file test reports directly with your local water authority or municipality on your behalf. Confirm this with your provider before scheduling. Some jurisdictions require the property owner to submit reports, while others accept direct submissions from the tester.
Backflow testing in Tualatin, Oregon typically costs between $50 and $200 per device, depending on the type of backflow preventer and the complexity of the installation. RPZ assemblies generally cost more to test than double check valve assemblies. Contact providers listed above for current pricing in the Tualatin area.
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