PUBLIC BETA: See water-monitoring locations and local water quality reports. USA states and territories.1

This tool explores local water sources. For the quality of tap water delivered by a utility, see the excellent new tool by the Environmental Working Group.

1. Select a State

About the water quality reports

The kind of results and test types can vary greatly for each report’s location and test date. It is often informative — and interesting — to explore the water quality of multiple sources near your areas of interest.

If you prefer the map version without access to the water-quality data, for some reason, you can find it here.

Service Type
Free online water-quality reports for all USA states and territories. Also: water news, people profiles, conservation resources.
Provider Name,
All USA states and territories
Two clicks to map all water sources; choose any marker to see what tests have found in that location.