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Illinois NPDES Permits

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 Illinois. Region 5 Pretreatment Limit Spreadsheet Illinois/Indiana(101 K, Nov. 2018)  Information about the National Pretreatment Program

For state-issued permits, visit Illinois EPA Wastewater Permit Programs.Exit


Final and draft permits

In Illinois, EPA issues all NPDES permits on tribal lands. The table below contains all final (i.e. active) and draft (i.e. proposed) NPDES permits issued by EPA within Illinois. It includes permits for individual facilities, general permits, and stormwater permits. Click on the facility/permit name to view the permit and supporting documents.

Illinois NPDES Permits
Location Facility or Permit Name Permit Number Permit Type Permit Status Effective Date
Various Illinois Surface Discharge Permit ILG62 General Final 02/10/2014