Check your local water quality.
Use the EPA's How's My Waterway tool to see how your community's lakes, rivers, and streams are doing — and learn what the ratings actually mean.
Look up your waterway
Enter a ZIP code, city, address, or waterbody name. We'll open the EPA's data for that location in a new tab.
Opens at mywaterway.epa.gov — an official U.S. Environmental Protection Agency tool.
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More places to check water quality and learn.
How's My Waterway
EPA's interactive map of local water-quality data, advisories, and assessments.
USGS Water Data
Real-time streamflow, groundwater, and water-quality data from across the U.S.
NOAA HAB Forecasts
Harmful Algal Bloom forecasts for the Great Lakes, Gulf of Mexico, and beyond.
EPA Beach Advisories
Find current beach closures and water-quality monitoring results near you.
CDC Healthy Swimming
How to swim safely and recognize the signs of unsafe recreational water.
Get Involved with WWA
Join the alliance — volunteer, partner, or bring restoration to your community.
Understanding your water — plainly.
Be part of the world's water restoration.
Join scientists, educators, partners, and everyday stewards working to restore lakes, rivers, and ecosystems — naturally.