Stormwater Regulatory Services
enforces the DuPage County
Countywide Stormwater & Floodplain Ordinance (PDF), and is responsible
for updates to the ordinance.
Submittal Packet details the process and requirements for a DuPage County
Stormwater & Floodplain Management Permit and should be referenced if you
have a pending or future permit submittal. Some municipalities (complete
waiver communities) choose to review and process all aspects of the
stormwater permit besides floodway review, while others (non-waiver and
partial waiver communities) review all aspects except for development in
Special Management Areas. It is important to contact your municipality to
determine its status and preference for processing stormwater permits.
Applicants for developments in unincorporated areas of DuPage County apply for
a stormwater permit directly through DuPage County. Please call 630-407-6700
with any questions regarding the stormwater permitting processes.
Helpful Forms and Links
Public Information Regarding IEPA General
The content, below, is displayed to provide information
regarding Illinois Environmental Protection Agency's (IEPA) permit requirements
for DuPage County's stormwater discharges from its larger construction projects
and storm sewer system, respectively.
Stormwater discharges associated with industrial activity from construction
sites that will result in the disturbance of one or more acres total land area
or from construction sites less than one acre of total land that is part of a
larger common plan of development or sale if the larger common plan will
ultimately disturb one or more acres total land area require compliance with IEPA
Permit No. ILR10, General NPDES Permit for Storm Water Discharges from
Construction Site Activities. DuPage County submits a Notice of Intent
(NOI) to IEPA in order to obtain coverage under ILR10 for projects where
coverage is required. Additional information regarding DuPage County's
construction site projects and associated stormwater discharges can be found
DuPage County is permitted to
discharge stormwater to Waters of the State through its coverage under IEPA
Permit No. ILR40, General NPDES Permit for Discharges from Small Municipal
Separate Storm Sewer Systems. The Water
Quality section's webpage further describes the County's programs designed
to meet the requirements of ILR40.