An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Water Research Fact Sheets

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page.


Drinking Water



Harmful Algal Blooms/Cyanobacteria

Water Quality

Ecosystem Services/Restoration

Stormwater Management/Watershed Management