Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

Indiana NPDES Permits

In Indiana, EPA has delegated authority to issue NPDES permits to the Indiana Department of Environmental Management.

Related Information:

NPDES Petition for Program Withdrawal in Indiana

Pretreatment: EPA and authorized NPDES state pretreatment programs approve local municipalities to perform permitting, administrative, and enforcement tasks for discharges into the municipalities. This spreadsheet explains the limits for Indiana. Region 5 Pretreatment Limit Spreadsheet Illinois/Indiana (xls) Information about the National Pretreatment Program.

For state-issued permits, visit Indiana's Wastewater Permitting Program