Governing Law and Regulations
Indiana Department of Environmental Management (IDEM) Office of Water Quality Permits Branch
U.S. Environmental Protection Agency (EPA) Region 5
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Indiana is authorized by the U.S. Environmental Protection Agency (EPA) to administer the federal National Pollutant Discharge Elimination System (NPDES) permit program under the federal Clean Water Act (CWA). The permitting structure, process, and permit modification requirements in Indiana generally follow the federal standards. Indiana is more stringent in that the state uses state-specific forms and requires the payment of annual fees. See the national section NPDES PERMIT