41 named for coliform bacteria itself on the list.
Per the state list or a state web page. Call to confirm.
Located outside Ohio but on its list.
USGS estimate for Ohio.
How many labs test for coliform bacteria in Ohio
41 labs on Ohio's official drinking-water lab list are certified to test for coliform bacteria. All 41 are named for coliform bacteria on the list. The Ohio list does not say which labs take samples from homeowners, so call a lab before you send one. 1 is located outside Ohio.
The list is published by the Ohio EPA - Division of Drinking and Ground Waters. List version on file: November 2026. Fetched 2026-11-15 (UTC).
Ohio labs certified for coliform bacteria
| Lab | Location | Bacteria certification | Public samples | Cert. expiry |
|---|---|---|---|---|
| American Analytical Laboratories, Inc. | Akron, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Benchmark Environmental Labs, Inc. | Columbus, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Biosolutions, LLC | Chagrin Falls, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| BoJhun Environmental Services | Fostoria, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Canton City Health Department | Canton, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Canton Water Laboratory | Canton, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Cardinal Environmental Lab, LLC | Youngstown, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| CETEC Cleveland Environmental Technology, Inc. | Middleburg Heights, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Cleveland Water Compliance Laboratory | Cleveland, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Coshocton Environmental Testing, LLC | Coshocton, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Dayton Central Water Quality Laboratory | Dayton, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Eastern Lab Services, Ltd. | Medina, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Edenridge Laboratory, Ltd. (formerly Holmes Laboratory, Inc.) | Millersburg, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Erie County Health Department Laboratory | Sandusky, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Eurofins Cleveland | Barberton, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Eurofins DW and WW Central - Lima (formerly Alloway Lima) | Lima, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Eurofins DW and WW Central - Marion (formerly Alloway Marion) | Marion, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Eurofins South Bend | South Bend, IN | Named on the official list | Public samples: ask the lab | Not on the list |
| Jackson County Water Company Laboratory | Jackson, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Kleinfelder Water Technologies Laboratory (formerly Industrial Fluid Management, Inc.) | McClure, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Logan County Health District Laboratory | Bellefontaine, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Mahoning County Board of Health | Youngstown, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| MASI Laboratory | Plain City, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| NEORSD Analytical Services | Cuyahoga Heights, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Ohio Department of Agriculture Consumer Protection Laboratory | Reynoldsburg, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Pace Analytical Services, LLC - Dayton | Englewood, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Q Laboratories | Cincinnati, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Ream & Haager Laboratories, Inc. | Dover, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| SafeSource Water Analytics LLC | McConnelsville, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Superior Laboratories | Galloway, OH | Named on the official list | Public samples: ask the lab | Not on the list |
| Bryan Water Plant Laboratory | Bryan, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Celina Water Department Laboratory | Celina, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Cincinnati Miller WTP Laboratory | Cincinnati, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Circleville WTP Laboratory | Circleville, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Geauga County Department of Water Resources | Chardon, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Greene County Sanitary Engineering Laboratory | Beavercreek, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Leetonia WTP Laboratory | Leetonia, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Portage County Water Resources | Ravenna, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Sebring Water Department Laboratory | Beloit, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Troy Water Plant Laboratory | Troy, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
| Twin City Water Plant Laboratory | Uhrichsville, OH | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | Not on the list |
How the Ohio list marks public samples (whole list). Not stated. The list covers public drinking-water certification.
Before you send a sample, call the lab to confirm it is currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Status can change between list updates.
Why test for coliform bacteria in Ohio
About a third of the 397 domestic wells tested for bacteria in a national USGS study had total coliform. Read our coliform bacteria explainer.
EPA advises private-well owners to test every year for total coliform bacteria, nitrates, total dissolved solids and pH. [1]
About 1,861,023 people in Ohio used private wells in 2015, by the USGS estimate of people on domestic self-supplied water. [2] Federal limits are written for public water systems, not private wells, so testing is up to the owner.
For tests that depend on your home (farms nearby, old plumbing, a new baby), use the which-tests checklist. When results arrive, check your numbers against EPA's limits. State guidance, county data and every lab: Ohio.
Other tests in Ohio
Ohio EPA - Laboratories Certified/Accepted to Perform Analyses on Public Drinking Water.
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