Testing · Ohio

How to test your tap water in Ohio

What's worth testing for in Ohio, based on the state's reported EPA findings, and how to reach a state-certified lab. For a step-by-step walkthrough, see the full testing guide.

1,130

community water systems in Ohio

systems reported PFAS above an EPA limit

systems with a lead action-level violation

What to prioritize in Ohio

Because Ohio's records flag PFAS and lead, start there — then add the standard panel below. These are system-level findings, so your own tap can differ in either direction.

PFAS Lead Nitrate Arsenic Trihalomethanes (TTHMs)

Find a state-certified lab

Ohio certifies the laboratories allowed to run official drinking-water tests. Use the EPA directory to find a certified lab in Ohio, or call the hotline with questions about a contaminant or method.

Find your state's certified labs (EPA) ↗ EPA Safe Drinking Water Hotline: 800-426-4791

For results you'll act on — a filter purchase, a real-estate disclosure, or a health concern — a state-certified lab is the gold standard. Many Ohio counties also run free or low-cost well-testing programs; ask your local health department.

Counts reflect reported EPA data for community water systems in Ohio — a snapshot, not a live measurement of your tap, and they don't cover private wells. PurityRadar doesn't sell tests or earn commissions. Confirm anything concerning with your utility or Ohio health department.