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DuPage County Stormwater Management Information
DuPage County has published a variety of stormwater management practice information on their website. Please visit their
to learn more about stormwater management.
Fall & Winter Stormwater Management Practices
Following is a list of stormwater management tips for fall & winter.
Fall is a time for football, cooler days and changing leaves. However, with the fall season also comes the inevitable need for yard cleanup.
All DuPage County residents live in a watershed, meaning most everything entering storm drains eventually runs into rivers or streams. In autumn, leaves are oftentimes blown or swept into storm drains and waterways and can become a source of water pollution. Once they reach waterways, leaves decompose and release phosphorus into the water, which can result in algae blooms and decreased oxygen for fish.
However, pollutants are not the only problem. Leaves can also build up along curbs, gutters and storm drains, which blocks stormwater runoff from entering this drainage infrastructure. Should a major weather event occur, this can lead to localized flooding.
DuPage County residents can help to keep excess leaves out of storm sewers and waterways by engaging in a number of activities.
Start a compost pile or add leaves to an existing one. While the organic debris is not ideal for aquatic life, composted leaves and other organic materials are an excellent resource for fertilizing your garden in the summer months. It provides necessary nutrients, while also reducing the need for chemical fertilizers. Leaves can be chopped into small pieces using a mulching mower, which will decompose directly on lawns. The leaf pieces can also be collected and spread around flowerbeds and shrubs as mulch. If recycling leaves in-house is not an option, residents may bring leaves to DuPage Yard Waste (1195 W. Washington St., West Chicago) for a fee. To transport, collect leaves in a secure and properly sealed paper bag to ensure they do not blow into storm sewers or streams.
Residents may also contact their local municipality or waste hauler for information on leaf removal services.
Before fall turns into winter, residents should be mindful of snow removal options. Traditional methods include utilizing road salts to melt snow from roads and driveways. However, chloride from road salts never fully dissipates when excess salt drains into rivers and rivers, causing harm to aquatic life.
Residents are encouraged to utilize best management practices for stormwater runoff during the winter months. Removing snow prior to applying a deicer, applying “just enough” to reduce hazard, and sweeping up and properly storing undissolved road salt after a storm for reuse are all ways to reduce the levels of chloride in DuPage waterways this winter. Alternative treatments applied before storms, such as a beet juice derivative, are also effective in reducing ice, while decreasing the need for road salt.
Public Information Regarding IEPA General Permits
The content below is displayed to provide information regarding the Illinois Environmental Protection Agency’s (IEPA) permit requirements for the Village of Westmont’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.
Documents and Information
FEMA Floodplain Map Updates
Below is a link to the FEMA website page that provides information regarding updated floodplain maps in your area. FEMA encourages residents to review these maps to see if their properties are affected. Follow the prompts on their website to find the maps for your area.
FEMA Floodplain Map Page
DuPage County Floodplain maps can also be found at
Flood Insurance Rate Map Open House
FEMA, the Illinois State Water Survey, and DuPage County are co-hosting an open house regarding changes to the Flood Insurance Rate Map (FIRM) on July 29. Area officials and residents are invited to attend. The public part of the open house will be from 4 to 7 p.m. The open house will be held at the DupAge County Government Center, Jack T. Knuepfer Building Auditorium, 421 County Farm Road, Wheaton, Illinois. For more information, call 217-333-2210.
Wetland Map Updates
Below is a link to the DuPage County website page that provides information regarding the updated wetland maps in your area. The County is asking residents to review these maps and provide feedback regarding the current proposed updates.
DuPage Wetland Map Initiative Page
Village of Westmont
31 W. Quincy St., Westmont, IL 60559
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