Backflow Testing Services in St Paul, Minnesota
Finding a reliable backflow testing professional in St Paul, Minnesota is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 13 backflow testing companies serving St Paul and surrounding communities including Saint Paul, Roseville, Minneapolis.
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 St Paul area.
Most water authorities in Minnesota 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 St Paul 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

Norblom Plumbing
Testing Verified · St Paul, MN · < 1 mi
“We had a leaking 30-year-old water heater that needed to be replaced. Michael Kostecky from Norblom came out right away and gave us a reasonable estimate. Michael's professionalism and apparent…”
Read more on GoogleRoto-Rooter Plumbing & Water Cleanup
Testing Verified · St Paul, MN · 2 mi
“Our water heater burst abruptly on a Sunday at 10pm and flooded our basement. We called Roto-Rooter immediately and they were available to schedule us in promptly the next morning! Timing wise, this…”
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Rascher Plumbing and Heating Inc.
St Paul, MN · 3 mi
“To those concerned, Rascher Plumbing and Heating has been my go-to for plumbing needs going on 30 years. This past week I noticed my water heater had evidence it was beginning to leak. It was this…”
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Freedom Plumbing and Water Conditioning
Testing Verified · South St Paul, MN · 7 mi
Roto-Rooter Plumbing & Water Cleanup
Minneapolis, MN · 7 mi
Champion Plumbing
Testing Verified · Eagan, MN · 8 mi
“Update 5/8/2025: We recently decided to replace our old gas gravity water heater and opted for a 50-gallon Bradford White Hybrid (heat pump) model to take advantage of energy rebates and lower our…”
Read more on GoogleNorthTech
St Paul Park, MN · 10 mi
“NorthTech came back to redo my irrigation system after my sewer line replacement, and they once again did an excellent job. They also laid new sod that looks fantastic so far. The entire process —…”
Read more on GoogleONYX PLUMBING & GAS
Testing Verified · Minneapolis, MN · 10 mi

Mr. Rooter Plumbing of The Twin Cities
Fridley, MN · 11 mi
“We couldn’t be happier with Mr. Rooter of the Twin Cities. From start to finish, the entire team was kind, professional, and genuinely understanding during a stressful sewer line repair. They stand…”
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Paul Bunyan Plumbing & Drains
Testing Verified · New Hope, MN · 15 mi
“Dave Brown was literally the best plumber I’ve worked with! We hired Paul Bunyan Plumbing to install a new toilet and we had a weird rough-in size that wasn’t standard. We had ordered the wrong size…”
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South Metro Backflow Testing llc
Testing Verified · Burnsville, MN · 16 mi
“I didn't even know what this was until the city sent me a letter. South Metro Backflow made this process soooo easy. Nobody really wants to pay for this in the first place but they made it easy and…”
Helpful resources
Frequently Asked Questions About Backflow Testing in St Paul
Backflow testing in St Paul, Minnesota 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 St Paul 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 St Paul 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 Minnesota require cross-connection control programs for commercial properties and irrigation systems.
Many municipalities in Minnesota require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in St Paul 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 St Paul 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.
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