Find a certified lab to test your water
Well water, city water, lead in old pipes, or a home sale: a state-certified lab gives you results you can trust. Find accredited labs near you, learn which tests matter, and get help fixing a bad result.
Data from state lab accreditation records
Find a lab
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How it works
Know what to test for
Bacteria and nitrates every year, plus whatever your area's geology calls for.
Use a certified lab
State-accredited labs, checked against accreditation records.
Fix a bad result
Get matched with local water treatment pros if something comes back high.
Bad result? Get help from water treatment pros near your area
Tell us what your test found and we'll connect you with up to three local water treatment companies.
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.
Free, no obligation. We don't sell your details to anyone else.
Just need a lab? Every certified lab is listed above with directions.
Own a business listed here?
Claim your listing for free, or upgrade to a full profile with photos, prices and booking links.
Common questions
Who should test their well water?
Anyone with a private well. Private wells aren't covered by federal drinking water rules, so owners are responsible for testing.
How much does a well water test cost?
It depends on the tests. A basic bacteria test is the cheapest; broad panels covering metals, nitrates and other chemicals cost more. Ask labs for a price list.
Can I use a home test strip instead?
Strips are fine for a quick check of hardness or pH, but bacteria and most health-related contaminants need a certified lab.