Atlas Butler Heating & Cooling
100/100 ✓ OH Utility-Approved Tester Verified #A11107 ★ 4.7 (8332 reviews) 2 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Backflow testing companies in Ohio
From the approved tester lists of City of Columbus and City of Columbus, newest read October 1, 2026. Ohio publishes no statewide tester list we can use, so we start with its largest utility lists.
170 companies on the utility list
106 listed here, phones checked on Google
The lists we use in Ohio
- City of Columbus approved backflow testers, City of Columbus: 153 companies based in Ohio, as of October 1, 2026.
- City of Columbus approved backflow testers (irrigation devices), City of Columbus: 17 companies based in Ohio, as of October 1, 2026.
Being on a utility's list means that utility lets the company file backflow test reports in its system. It is not a state license. See Ohio backflow rules.
Backflow testing businesses in Ohio
Ranked by our quality score: on the utility's current list, a phone that matches the business's Google profile, and a website. Nobody can pay to move up.
Amanda Plumbing
100/100 ✓ OH Utility-Approved Tester Verified #A11680 ★ 4.8 (1219 reviews) 3 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ OH Utility-Approved Tester Verified #A12686 ★ 4.8 (1207 reviews) 3 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Rain One Inc
100/100 ✓ OH Utility-Approved Tester Verified #A11423 ★ 4.9 (1184 reviews) 2 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ OH Utility-Approved Tester Verified #A13097 ★ 4.8 (1033 reviews) 2 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Schmidt Security Pro
100/100 ✓ OH Utility-Approved Tester Verified #A10477 ★ 5 (819 reviews) 2 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Koorsen Fire & Security
100/100 ✓ OH Utility-Approved Tester Verified #A11757 ★ 4.9 (729 reviews) 7 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ OH Utility-Approved Tester Verified #A13270 ★ 4.9 (606 reviews) 8 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ OH Utility-Approved Tester Verified #A13645 ★ 4.9 (586 reviews) 2 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Plumbing One LLC
100/100 ✓ OH Utility-Approved Tester Verified #A1411 ★ 4.9 (312 reviews) 2 certified testersOn City of Columbus list Backflow Testing
Verified Oct 2026 · Unclaimed listing
All 106 backflow testing businesses in Ohio, by town
Ashland: Guenther Mechanical, Inc
Blacklick: Rain One Inc
Canal Winchester: General Temperature Control, Plumbing One LLC, Rose Plumbing LLC
Cardington: Superior Outdoor Management
Cincinnati: RTF Fire Protection
Columbus: ABM Building Solutions, Abram Contractors, Aggressive Mechanical, Allegiant Plumbing LLC, American Mechanical Group Inc, Apex Plumbing Pros LLC, Aquis Solutions LLC, Atlas Butler Heating & Cooling, Baumann Plumbing, Calhoun Plumbing Inc, Capital Fire Protection Company, Columbus Backflow Testing Company & Fire, Electronic Systems Consultants, Elite Fire Services LLC, Enervise, EPro Services, Farber Corporation, Freeland Contracting Co, Fritz Baumann & Sons Inc, G Mechanical, G&M Plumbing, Geiger Brothers Inc, Golden Rule Service Inc, H & M Plumbing, Koorsen Fire & Security, Limes Plumbing Inc, MJ Baumann Co Inc, Muetzel Plumbing & Heating Co, Nationwide Irrigation, Ohio Heating & Refrigeration, Parson Plumbing & Drains, Plumbing and Drain Professionals LLC, Radico Inc, Roto Rooter Services, S & S Midwest Fire Protection LLC, S A Comunale Co Inc (Columbus), Sauer Group Inc, Speer Mechanical, Summit Fire & Security llc, The Backflow Guy LLC, TP Mechanical Contractors Inc, VFP Fire Systems
Crestline: Central Ohio Plumbing Heating & Cooling
Dayton: Applied Mechanical Systems Inc, Heeter Plumbing LLC
Delaware: Amanda Plumbing, Emergency Plumbing Service LLC/Backflow, Sewell Irrigation
Dublin: Accurate Plumbing Inc, J W Danforth
Grove City: Capital City Mechanical, Inc, Columbus Building Services Inc, Silco Fire & Security (Silco Fire Protection)2345
Groveport: All Hours Mechanical, Gag Inc Lawncare Services, White Knight Plumbing LLC
Hilliard: Gunther, Irrigation Solutions, Keigley Plumbing Inc, Old Hilliard Plumbing
Howard: Freedom Fire Protection LLC
Johnstown: Mark Cantrell Plumbing LLC
Lancaster: Pipeworks LLC
Lewis Center: Dalmation Fire (Shambaugh & Son LP), Genesis Building Systems, Germann Bros LLC, DBA Greenlawn Specialists, JCORR Mechanical
Lexington: True North Fire Protection
Lima: Brown's Heating Cooling Plumbing Electrical
London: Direct Mechanical LLC, Madison Fire Protection, Sprinkler Doctor Inc
Mansfield: Schmidt Security Pro
New Albany: Best Plumbing Ltd, McCullough's Landscape & Nursery LLC
Newark: Houston Plumbing & Heating Inc, Wheeland Plumbing & Drain Service LLC
Ontario: Patriot Fire Protection
Orient: Buckeye Plumbing & Drains LLC
Pataskala: Crawford Mechanical Services, Cruikshank Plumbing
Pickerington: Benitez Fire Protection, Green Touch Irrigation LLC
Plain City: CCS Construction LLC
Powell: Donovan Sprinkler LLC, Suburban Irrigation Inc
Reynoldsburg: West Plumbing & Rooter Service
Springfield: Central Fire Protection Co Inc
Walbridge: GEM Industrial Inc.
West Jefferson: West Jefferson Plumbing & Heating
Westerville: D & L Plumbing Inc, Eaton Plumbing Inc, Jack L Woods Plumbing Company Inc
Worthington: Absolute Irrigation LLC, Hard Fire Suppression Systems, Lawn Plumber Irrigation Service, Siemens Industry
Xenia: Nelson Hoke Mechanical, Sbiii LLC
Questions
Where do these Ohio backflow testing companies come from?
Ohio publishes no statewide list of backflow testers that we can use, so every business here is on the approved list of City of Columbus and City of Columbus: companies allowed to file backflow test reports in that water system. We read the list on October 1, 2026 and checked each company's phone against its Google profile.
Who is allowed to test a backflow preventer in Ohio?
A tester certified as Ohio's rules require, and usually one your water utility accepts. Our Ohio rules guide links the state rule. Ask any company for the tester's certificate number before the test.
How often does a backflow assembly need testing?
Most water utilities require testable backflow assemblies to be tested at installation and then every year. Your utility's notice gives your deadline and how the report is filed.
Never miss your annual backflow test
Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested and we'll text you a month before it is due, with certified local testers ready to book.
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