DuPage County Stormwater Management is providing this virtual public meeting space in accordance with DuPage County’s National Pollution Discharge Elimination Systems (NPDES) Permit No. ILR40 from the Illinois Environmental Protection Agency (IEPA), which allows DuPage County and its municipalities to discharge stormwater into waterways. The NPDES permit requires the County to hold at least one meeting annually for the public to provide input on the countywide water quality program. 

The virtual public meeting space can be found here:

Stormwater Management Guidebook

DuPage County Stormwater Management has created a guidebook to help all residents understand flooding issues and reduce future flooding impacts on their property. Please go to the DuPage County website and download the Guide to Preventing and Repairing Flood Damage.

MS4 Annual Report

2021 - 2022 MS4 Annual Report 

NOI Waiver

DuPage County Stormwater Publications/Reports   

View past MS4 Annual Reports in our Archive Center



If you would like to look up your address to review the flood hazard information, use the FEMA Flood Map Service Center at  Should you have any questions, contact the Engineering Department at 630-823-5700 between the hours of 8:00 a.m. and 4:30 p.m.   

Watershed outreach 

The goal of our Watershed Outreach Program is to develop partnerships with communities, park districts and other organizations to not only increase general awareness and appreciation for our local steams, but more importantly, to a change in behaviors to benefit the entire watershed.  For more information, click on the files below. 

Back to Basics - Know your Watershed

DuPage Flood-Proofing Guidebook

Falling into Winter (Fall)

Greening Urban Areas

Springing into Summer

Sustainable Lawn Care Practices