SDWIS Search

SDWIS icon Ways to Search for Public Water Systems Using SDWIS

Select a geographic area
Enter the water system ID number

Geography Search

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.

Choose a state or territory from the map below or the list below.

Map of the United States

Other SDWIS sites include:

Water System ID Search

Enter a complete nine-character Water System ID number. If the ID number enter is not nine characters, an error message is displayed. Once the ID number is entered, click on the "Search" button to submit the search.

Water System ID: How do I find a Water System?

Related Information

For more detailed information about the water you drink, contact your local water supplier directly or call your state drinking water agency.
To find the phone number for your state's drinking water agency, contact the Safe Drinking Water Hotline.

For national and state-by-state information, please see the Office of Ground Water and Drinking Water's drinking water facts and figures page.

NOTICE: EPA is aware of inaccuracies and underreporting of some data in the Safe Drinking Water Information System. We are working with the states to improve the quality of the data.