Public Comment Opportunities
IEPA General Permits
The content below is displayed to provide information regarding the Illinois Environmental Protection Agency's (IEPA) permit requirements for Naperville's stormwater discharges to comply with the General NPDES Permit for Discharges from Small Municipal Separate Storm Sewer Systems (ILR40). ILR40 requires that a permittee reduce, to the maximum extent practicable, pollutants associated with stormwater runoff being discharged to any surface water of the state.
- IEPA Permit No. ILR40, General NPDES Permit for Discharges from Small Municipal Separate Storm Sewer Systems - 2016 (PDF)
- Naperville Stormwater Management Plan (PDF)
- 2019 City of Naperville Notice of Intent (NOI) (PDF)
- 2020 City of Naperville Notice of Intent (NOI) (PDF)
- 2021 City of Naperville Notice of Intent (NOI) (PDF)
- 2016 Naperville NPDES Annual Report (PDF)
- 2017 Naperville NPDES Annual Report (PDF)
- 2018 Naperville NPDES Annual Report (PDF)
- 2019 Naperville NPDES Annual Report (PDF)
- 2020 Naperville NPDES Annual Report (PDF)
- 2021 Naperville NPDES Annual Report (PDF)
The City of Naperville welcomes comments on its Stormwater Management Plan and the above documents.