Backflow Testing Services in Lake Oswego, Oregon
Finding a reliable backflow testing professional in Lake Oswego, Oregon is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 16 backflow testing companies serving Lake Oswego and surrounding communities including West Linn, Tualatin, Oregon City.
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 Lake Oswego 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 Lake Oswego 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
Bennett Irrigation and Backflow Service
Testing Verified · Portland, OR · 2 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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DeTemple CO
No reviews yet
Testing Verified · Milwaukie, OR · 3 mi
Proline Plumbing
Portland, OR · 5 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 · 6 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…”
Read more on GoogleOregon Backflow Testing, Llc
Testing Verified · Portland, OR · 6 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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Green Leaf Landscape LLC
Portland, OR · 7 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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D&F Plumbing, Heating and Cooling
Testing Verified · Portland, OR · 8 mi
Dynamic Backflow LLC
Testing Verified · Wilsonville, OR · 9 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 GoogleBeavercreek Backflow LLC
Testing Verified · Beavercreek, OR · 12 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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Backflow Management Inc.
Testing Verified · Portland, OR · 12 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…”
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Bens Backflow LLC
Testing Verified · Eagle Creek, OR · 16 mi
“Fantastic service! My inquiry was responded to within an hour and scheduling was a breeze. Had an appointment that was going to be scheduled two weeks out, and then received a call back where they…”
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Flowcheck LLC
Testing Verified · Hillsboro, OR · 17 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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Frequently Asked Questions About Backflow Testing in Lake Oswego
Residential tests typically involve a single PVB or DCVA device and are quicker to complete. Commercial properties in Lake Oswego 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 Lake Oswego 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 Lake Oswego, 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 Lake Oswego area.
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 Lake Oswego 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 Oregon require cross-connection control programs for commercial properties and irrigation systems.
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