EPA Water Quality Data

The Water Quality Portal is the nation's largest source for water quality monitoring data. The Water Quality Portal (WQP) uses the Water Quality Exchange (WQX) data format to share over 340 million water quality data records data from 400 federal, state, tribal and other partners.

Data and Resources

Information

Field Value
Contact Name EPA
Contact Email [email protected]
Last Updated 23 October 2023
Published 16 April 2020