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The Safe Drinking Water Information System (SDWIS) contains information about public water systems and their violations of EPA's drinking water regulations, as reported to EPA by the states. These regulations establish maximum contaminant levels, treatment techniques, and monitoring and reporting requirements to ensure that water systems provide safe water to their customers. This query will help you to find your drinking water supplier and view its violations and enforcement history since 1993.

You may select systems either by locating systems within a geographic area or by entering the water system ID number.
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, click here or call the Safe Drinking Water Hotline at 1-800-426-4791.

For help understanding and using the data in this system, consult the User's Guide. For national and state-by-state information, please see our 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.

Geography Search

Select a state to search by clicking on the map or on the text links below.

Other SDWIS sites include:

Other SDWIS sites include:

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