QL
Q Laboratories
1911 Radcliff Drive, Cincinnati, OH
Water testing labs in Hamilton County, OH
3 state-accredited water testing labs in Hamilton County, OH.
3 certified labsUpdated October 2026Source: state lab accreditation records
Source: Ohio EPA list of labs certified for public drinking water, list dated Oct 1, 2026. Find a Water Test is independent and not affiliated with Ohio EPA. Certification covers specific tests, so confirm the lab is certified for the ones you need: Verify a certification or call Ohio EPA lab certification at (614) 644-2752.
3 certified labs near Hamilton County, OH
AE
ALS Environmental - Cincinnati
4388 Glendale-Milford Road, Cincinnati, OH
CM
Cincinnati Miller WTP Laboratory
5651 Kellogg Avenue, Cincinnati, OH
Public water system lab. Many don't accept private well samples, so call first.
Mail-in labs that ship to Hamilton County, OH
How mail-in testing worksNT
National Testing Laboratories (WaterCheck)
Ships nationwide
Single tests from $75; well and city packages $165 to $440
Not on Ohio's certified list. Fine for a general check; for a home sale or an official result, use a Ohio-certified lab.
TS
Tap Score by SimpleLab
Ships nationwide
Single-contaminant kits from about $145; full well and city panels about $300 to $870
Testing service: sends your sample to a partner lab.
Bad result? Get help from water treatment pros near Hamilton County, OH
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What happens next
- We match your ZIP to water treatment companies nearby.
- They contact you directly to talk through your results.
- Compare options and pick one, or none. No fee, no obligation.
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Just need a lab? Every certified lab is listed above with directions.
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Well water guides
Common questions
Where can I test well water near Hamilton County, OH?
The state-accredited labs above serve Hamilton County, OH. Many offer sample bottles you collect at home.
What should I test for near Hamilton County, OH?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.