Certified labs near Williston, Ohio
Pittsburgh, Pennsylvania · (412) 922-4000
190 mi away
Lancaster, Pennsylvania · (717) 656-2300
382 mi away
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Labs on Ohio’s official list
- Jones & Henry Laboratories, Northwood · ~7 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- The Ohio State University Stone Laboratory, Put-in-Bay · ~27 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- BoJhun Environmental Services, Fostoria · ~30 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- Erie County Health Department Laboratory, Sandusky · ~35 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- Kleinfelder Water Technologies Laboratory (formerly Industrial Fluid Management, Inc.), McClure · ~35 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- Eurofins DW and WW Central - Marion (formerly Alloway Marion), Marion · ~70 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- Eurofins DW and WW Central - Lima (formerly Alloway Lima), Lima · ~74 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
- Eastern Lab Services, Ltd., Medina · ~79 miListed in Ohio EPA’s certified lab list. See the official list → (checked 2026-09-30)
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Official lab list for Ohio
Ohio EPA – drinking water laboratory certificationOhio EPA certifies drinking-water labs. Its program page links to the current list of certified labs. Call a lab first to ask whether it tests private wells.epa.ohio.gov · checked 2026-10-18 (search; page returns 404 to our bot UA – recheck in browser)Ohio Environmental Protection AgencyThis state agency certifies the labs that may test drinking water. Use its list to pick a certified lab for your well sample.dam.assets.ohio.gov · checked 2026-10-18 · link via EPA
Recommended tests
- Every year: bacteria (total coliform and E. coli), nitrate, pH and total dissolved solids — CDC
Many labs accept mailed samples, so a lab a few hours away may still work for you.