Sep 24, 2021, 5:51 pm

NPDES Site Directory

The NPDES module of the Compliance Information System (ICIS) tracks surface water permits issued under the Clean Water Act. Under NPDES, all facilities that discharge pollutants from any point source into waters of the United States are required to obtain a permit. The permit will likely contain limits on what can be discharged, impose monitoring and reporting requirements, and include other provisions to ensure that the discharge does not adversely affect water quality.

A complete directory of NPDES sites have been organized by State. Click on the map or links below for details along with their location.