FBT

Backflow Testing Services in Hamilton, Ohio

Finding a reliable backflow testing professional in Hamilton, Ohio is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 20 backflow testing companies serving Hamilton and surrounding communities including Fairfield, Middletown, 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 Hamilton 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 Hamilton 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.

20 listed providers

Services:
Dupps Plumbing, Inc. backflow testing
5 mi

Dupps Plumbing, Inc.

4.8(300)

Hamilton, OH · 5 mi

Backflow TestingPreventer InstallationCommercial

We experienced an emergency shower leak that affected our family room ceiling. Dupps promptly responded on a Saturday evening when other companies were only available Monday. Dan arrived on time and…

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Website
BACKFLOW TRAINING backflow testing
7 mi

BACKFLOW TRAINING

No reviews yet

Fairfield, OH · 7 mi

Website
Nieman Plumbing backflow testing
8 mi

Nieman Plumbing

4.8(497)

Cincinnati, OH · 8 mi

Backflow TestingCommercialResidential

We cannot say enough good things about Nieman Plumbing. Brennan and Ian arrived this morning to address problems with the cast iron drains below the basement slab of our 60 year old ranch…

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Mr. Rooter Plumbing of Greater Cincinnati backflow testing
8 mi

Mr. Rooter Plumbing of Greater Cincinnati

4.7(822)

Cincinnati, OH · 8 mi

Backflow Testing

Cannot rave enough at the amazing techs and excellent service I was provided today using Mr Rooter! Had an unexpected water line bust overnight (something I’ve never witnessed or experienced anything…

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Queen City Mechanicals backflow testing
Testing Verified
8 mi

Queen City Mechanicals

4.0(7)

Testing Verified · Cincinnati, OH · 8 mi

Backflow TestingEmergency ServiceFree Estimates
Website
Blue Chip Plumbing backflow testing
Testing Verified
8 mi

Blue Chip Plumbing

4.9(750)

Testing Verified · Cincinnati, OH · 8 mi

Backflow TestingCommercial

We’ve had Peter Z. from Blue Chip Plumbing out to our home for two different issues - one involving our home's water pressure and another to replace a decades-old bathroom sink - and we couldn’t be…

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Website
Nicholson Lab Inc backflow testing
Testing Verified
9 mi

Nicholson Lab Inc

5.0(1)

Testing Verified · West Chester Township, OH · 9 mi

Backflow TestingPreventer Repair
Website
Cinti Master Plumbers Association backflow testing
9 mi

Cinti Master Plumbers Association

4.8(13)

Cincinnati, OH · 9 mi

Backflow Testing

Joyce does a great job running this. I am in the restoration business but have met some great people through this organization.

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Backflow Prevention Services backflow testing
Testing Verified
10 mi

Backflow Prevention Services

3.1(8)

Testing Verified · Liberty Township, OH · 10 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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RTF Fire Protection backflow testing
11 mi

RTF Fire Protection

3.5(17)

Cincinnati, OH · 11 mi

Backflow Testing
Website
Ken Herbert Plumbing backflow testing
Testing Verified
13 mi

Ken Herbert Plumbing

4.6(82)

Testing Verified · Cincinnati, OH · 13 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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Nixco Plumbing Inc. backflow testing
Testing Verified
15 mi

Nixco Plumbing Inc.

4.8(2,128)

Testing Verified · Mason, OH · 15 mi

Backflow TestingAnnual CertificationEmergency Service

❄️ When a snow emergency ends, and your week begins at 8:00 AM promptly, you need pros who show up on time and ready to make an impact! CHECK, CHECK, DONE! Nixco Plumbing scores! At 9 degrees and…

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Halpin Plumbing Inc backflow testing
Testing Verified
16 mi

Halpin Plumbing Inc

4.9(1,127)

Testing Verified · Cincinnati, OH · 16 mi

Backflow TestingEmergency Service

Halpin recently completed a complex, three-day job at our residence. We are extremely pleased with every aspect of the service. We want to specifically commend Geoff and Rob. They were timely…

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Archer Plumbing Co Inc backflow testing
16 mi

Archer Plumbing Co Inc

4.8(48)

Cincinnati, OH · 16 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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Zins Plumbing backflow testing
Testing Verified
17 mi

Zins Plumbing

4.5(157)

Testing Verified · Cincinnati, OH · 17 mi

Free Estimates

The only word which accurately describes the service I received from this company is "Remarkable." I previously owed rental properties and used plumbers many time for interior plumbing and sump pump…

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AR
17 mi

Allied Reddi-Rooter

4.3(106)

Cincinnati, OH · 17 mi

Residential

Wow! So impressed and grateful to Allied. I needed a sewer line inspection done same day. I called and they set me up with an appointment range of 4-7pm. Rik and his assistant arrived PROMPTLY at 4pm…

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RP
Testing Verified
18 mi

Roto-Rooter Plumbing & Water Cleanup

4.8(876)

Testing Verified · Norwood, OH · 18 mi

Backflow TestingCommercialEmergency Service

I had a great customer service experience with roto rooter. My wife and I needed our sump pump replaced and the problem was immediately identified by a tech, Giovanni, who showed up well within the 2…

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Ken Neyer Plumbing backflow testing
18 mi

Ken Neyer Plumbing

4.9(772)

Cleves, OH · 18 mi

Backflow TestingPreventer InstallationCommercial

The company came out quickly and the scheduler, Lisa, was so kind and helpful every time I called. My job quickly became way more involved than initially expected due to a very small crack in the tub…

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Apollo Home backflow testing
18 mi

Apollo Home

4.9(15,593)

Cincinnati, OH · 18 mi

Backflow TestingFree Estimates

Nate has an extensive grasp of how underground plumbing works. He is knowledgeable, meticulous, and professional. His piping is a work of art. He fixed a slab leak that another company completely…

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Website
CP
Testing Verified
19 mi

Copper Pipe Plumbing Services Inc.

4.9(138)

Testing Verified · Maineville, OH · 19 mi

CommercialResidential
Website

Frequently Asked Questions About Backflow Testing in Hamilton

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 Ohio 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 Hamilton 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 Hamilton 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 Hamilton, 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 Hamilton area.

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