An official website of the United States government.
This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »
To select an area in which to search, click on that state or territory within the map provided or on the text link for that state or territory below the map. Links for EPA-regulated territories outside the scope of the map are provided as well. Once a geographical area is selected, users can search based on: water system name, county name, and/or population served.