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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 (xls) Information about the National Pretreatment Program.

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