Need a SWPPP in DeKalb County, IL? DeKalb County has about 101,335 residents (2024 estimate) and 12 incorporated cities and towns. Describe your project once: stormwater consultants who work in DeKalb County get back to you.
Erosion control permits in DeKalb County may be issued by the city, the county or a conservation district.
Services available in DeKalb County
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SWPPP and permit coverage
Preparation of the SWPPP and notice of intent under the construction general permit.
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Stormwater inspections
Routine and post-storm inspections with reports for the permit.
Frequently asked questions in DeKalb County
Do stormwater consultants cover the whole of DeKalb County?
Most pros work across the county and neighboring counties. Enter your ZIP code in the form and we match you with pros who serve your exact area.
SWPPP in Illinois: all counties
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.