Well Water Quality Data
Comprehensive water quality data for private wells, compiled from EPA, USGS, and CDC sources.
Data from EPA · USGS · CDC
About 43 million Americans rely on private wells for their drinking water. Unlike municipal water, private wells aren't tested or regulated by the government — that responsibility falls entirely on the homeowner. YourWaterReport gives you the local data you need to make informed decisions about testing and treatment.
Search by ZIP code or county name to access your local well water data.
View comprehensive data on contaminants detected in your area, sourced from EPA, USGS, and CDC.
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83 counties
"Private wells are completely unregulated at the federal level. Millions of Americans are drinking water that has never been tested and may contain dangerous levels of arsenic, nitrate, or other contaminants."
— Dr. Marc Edwards, Virginia Tech, Civil & Environmental Engineering
"Our research consistently finds that private well owners lack access to clear, actionable data about their water quality. The burden of testing falls on individuals who often don't know where to start."
— Dr. Kelsey Pieper, Northeastern University, Civil & Environmental Engineering
"Groundwater contamination from agricultural runoff, legacy industrial sites, and natural geology affects tens of millions of Americans — most of whom have no idea their water may be at risk."
— Dr. Avner Vengosh, Duke University, Nicholas School of the Environment
Data sourced independently from EPA, USGS, and CDC. See our full methodology →
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