The Permits Branch serves residents and businesses located in Indiana by issuing National Pollutant Discharge Elimination System (NPDES) and construction permits to sources that discharge wastewater to streams, lakes, and other water bodies. The Municipal NPDES Permits Section, including the Combined Sewer Overflow (CSO) Program, and Industrial NPDES Permits Section issue permits to point source discharges in accordance with the federal Clean Water Act (CWA), federal laws, and state laws and regulations. The Permits Administration Section administers the non-storm water NPDES General Permits Program. The Facility Construction and Engineering Support Section issues construction permits related to wastewater treatment plant and sewer construction.
Applicable State Forms are available on the IDEM Agency Forms page.
Wastewater Permits
National Pollutant Discharge Elimination System (NPDES) Permits
- NPDES Program Overview
- Permits on Notice
- IDEM Permit Appeal Procedures
- Wastewater Compliance
- Monthly Reporting State Forms (See: IDEM Agency Forms)
Streamlined Mercury Variance (SMV)
- Municipal SMV Application Form, Overview, and Instructions - State Form 52112 (See: IDEM Agency Forms)
- Industrial SMV Application Form, Overview, and Instructions - State Form 52111 (See: IDEM Agency Forms)
- SMV FAQs [DOC]
List of NPDES Permits (Updated Quarterly)
The NPDES permits are tracked within the U.S. EPA ICIS database. This is a list in Excel format of all NPDES permit records within the ICIS system for Indiana. It is broken into multiple tabs (22) with the first tab containing all records, then the subsequent tabs containing subsets of specific groups of records commonly of interest. Detailed information including maps, inspections, compliance, and reported effluent data is available on the U.S. EPA ECHO web site.