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Updated Sep 2026
EPA Water Quality Portal Modernization Quick Reference Guide
Program Summary
Guide explaining what is changing as EPA and USGS rebuild the Water Quality Portal, the main federal gateway for ambient water quality data.
Full Description
The Water Quality Portal is where most monitoring groups and researchers pull standardized ambient water quality data, and EPA and USGS are jointly modernizing it. This reference guide walks through what is changing for users. Anyone running automated queries or a monitoring dashboard against the portal should read it, because existing workflows may break.
Key Details
groups
Eligible Applicants
Water quality data users, volunteer monitoring groups, researchers
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Geographic Focus
PA, OH, WV, National
payments
Funding Amount
Free
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Contact
EPA Water Data contact form, https://www.epa.gov/waterdata
