Backflow Testing Services in Gresham, Oregon
Finding a reliable backflow testing professional in Gresham, Oregon is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 14 backflow testing companies serving Gresham and surrounding communities including Portland, West Linn, Lake Oswego.
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 Gresham 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 Gresham 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.
14 listed providers

Backflow Management Inc.
Testing Verified · Portland, OR · 4 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 GoogleAmerican Backflow and Plumbing Services Inc
Testing Verified · Portland, OR · 8 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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Proline Plumbing
Portland, OR · 9 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 GoogleBens Backflow LLC
Testing Verified · Eagle Creek, OR · 10 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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DeTemple CO
No reviews yet
Testing Verified · Milwaukie, OR · 10 mi

D&F Plumbing, Heating and Cooling
Testing Verified · Portland, OR · 11 mi
Bennett Irrigation and Backflow Service
Testing Verified · Portland, OR · 12 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…”
Read more on GoogleBeavercreek Backflow LLC
Testing Verified · Beavercreek, OR · 15 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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Green Leaf Landscape LLC
Portland, OR · 17 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…”
Read more on GoogleOregon Backflow Testing, Llc
Testing Verified · Portland, OR · 19 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.”
Read more on GoogleHelpful resources
Frequently Asked Questions About Backflow Testing in Gresham
Many municipalities in Oregon require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Gresham 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 Gresham 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 Gresham with real customer reviews.
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.
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