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Backflow Testing Services in Cincinnati, Ohio

Finding a reliable backflow testing professional in Cincinnati, Ohio is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 24 backflow testing companies serving Cincinnati and surrounding communities including Fairfield, Hamilton, Mason.

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 Cincinnati area.

Most water authorities in Ohio 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 Cincinnati 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.

7 listed providers

Services:
Archer Plumbing Co Inc backflow testing
3 mi

Archer Plumbing Co Inc

4.8(48)

Cincinnati, OH · 3 mi

Backflow Testing

Work Performed June 12, 2019 This was my first time looking for a truly real, qualified plumber, because I could no longer trust the work of pseudo plumbers. I had a busted indoor basement pipeline…

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Website
TriState Water Works backflow testing
Testing Verified
7 mi

TriState Water Works

4.9(315)

Testing Verified · Cincinnati, OH · 7 mi

Backflow TestingPreventer RepairSprinkler Backflow

Update 4/5/24 Tim restarted our irrigation for the year, after the winter season. Tim has been our go-to-sprinkler-irrigation-guy for 2 1/2 years. We literally wouldn’t use anyone else! He always…

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Ken Herbert Plumbing backflow testing
Testing Verified
8 mi

Ken Herbert Plumbing

4.6(82)

Testing Verified · Cincinnati, OH · 8 mi

Backflow TestingCommercialResidential

Highly recommend Ken Herbert plumbing company. They helped us recover from a plumbing nightmare for a reasonable cost. All the staff was very efficient, friendly, knowledgeable, professional and…

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TL
Testing Verified
9 mi

The Lawn Management Sprinkler Company

4.0(35)

Testing Verified · Cincinnati, OH · 9 mi

Backflow TestingSprinkler Backflow

I highly recommend Lawn Management Sprinkler Co. David Grant, Owner, came out to give me an estimate. He is extremely knowledgeable and easy to work with. Ashley and Danielle, who work in the office…

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Queen City Mechanicals backflow testing
Testing Verified
11 mi

Queen City Mechanicals

4.0(7)

Testing Verified · Cincinnati, OH · 11 mi

Backflow TestingEmergency ServiceFree Estimates
Website
RTF Fire Protection backflow testing
12 mi

RTF Fire Protection

3.5(17)

Cincinnati, OH · 12 mi

Backflow Testing
Website
Backflow Prevention Services backflow testing
Testing Verified
20 mi

Backflow Prevention Services

3.1(8)

Testing Verified · Liberty Township, OH · 20 mi

Backflow TestingPreventer RepairCross-Connection Control

Another great experience in 2025 for a backflow test. Highly recommend Backflow Prevention Services. Responsive, reasonably priced and knowledgeable, Hired to test my irrigation backflow. Tim found a…

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Frequently Asked Questions About Backflow Testing in Cincinnati

Backflow testing in Cincinnati, Ohio 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 Cincinnati 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 Cincinnati 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 Ohio require cross-connection control programs for commercial properties and irrigation systems.

Many municipalities in Ohio require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Cincinnati 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 Cincinnati 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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