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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Compliance Monitoring Data Portal

The Compliance Monitoring Data Portal (CMDP) enables drinking water utilities and laboratories to report data electronically to primacy agencies with fewer errors and in a more efficient manner.

Basic Information

The CMDP increases data accuracy and completeness,  decreasing the overall reporting burden for primacy agencies.

Get Data Tool

Learn More

Primacy agencies that are interested in learning more about CMDP can visit the CMDP Help Center Exit