Private well water, by town, from public records
What is in the well water where you live?
State labs and the USGS have tested tens of thousands of private wells for arsenic, radon, uranium, PFAS and more. Well Water Nerd turns those records into a plain answer for every county and town, with the source named on every number.
New: arsenic, nitrate and PFAS in private wells, state by state. Need a test? Where to get a well tested, by state. Or go closer than the town: check the sampled wells near your address.
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It says what is common in local bedrock and which tests to order, then sends the free local report to your inbox.
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Every line compared to EPA and your state's stricter limits, a plain-English summary, and a plan for what to fix first.
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Licensed local companies test at your tap for free and quote treatment only if something needs fixing. We are signing them on by county; leave your details and we email you the company's name before anything is shared.
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Pick your state
Measured: state or federal test results. Estimated: USGS national model until results are published.
- Alabama40 measured, 27 est.
- Alaska13 measured
- Arizona15 measured
- Arkansas64 measured, 11 est.
- California51 measured, 7 est.
- Colorado47 measured, 16 est.
- Connecticut9 measured
- Delaware3 measured
- Florida64 measured, 3 est.
- Georgia40 measured, 117 est.
- Hawaii4 measured
- Idaho44 measured
- Illinois59 measured, 43 est.
- Indiana40 measured, 52 est.
- Iowa98 measured, 1 est.
- Kansas103 measured
- Kentucky33 measured, 87 est.
- Louisiana62 measured, 2 est.
- Maine16 measured
- Maryland24 measured
- Massachusetts13 measured
- Michigan38 measured, 45 est.
- Minnesota87 measured
- Mississippi57 measured, 25 est.
- Missouri102 measured, 5 est.
- Montana49 measured, 7 est.
- Nebraska91 measured, 2 est.
- Nevada16 measured, 1 est.
- New Hampshire10 measured
- New Jersey20 measured
- New Mexico30 measured, 3 est.
- New York51 measured, 10 est.
- North Carolina100 measured
- North Dakota53 measured
- Ohio40 measured, 46 est.
- Oklahoma50 measured, 27 est.
- Oregon33 measured, 3 est.
- Pennsylvania67 measured
- Rhode Island3 measured, 2 est.
- South Carolina23 measured, 23 est.
- South Dakota65 measured
- Tennessee33 measured, 62 est.
- Texas218 measured, 36 est.
- Utah27 measured, 2 est.
- Vermont14 measured
- Virginia29 measured, 87 est.
- Washington34 measured, 5 est.
- West Virginia37 measured, 18 est.
- Wisconsin72 measured
- Wyoming23 measured