Chicago vs Skokie
How do stormwater management rules compare between Chicago, IL and Skokie, IL?
Skokie has fewer restrictions than Chicago.
Chicago, IL
Cook County
Chicago's Stormwater Management Ordinance (MCC 11-18) requires regulated developments to capture and manage stormwater runoff, including capturing the first half-inch from impervious surfaces. The 2024 Stormwater Manual provides detailed BMP guidelines.
View full Chicago rules →Skokie, IL
Cook County
Skokie is subject to the Cook County Watershed Management Ordinance (WMO) administered by the Metropolitan Water Reclamation District of Greater Chicago (MWRD), which regulates development-related stormwater volume, detention, and water quality. The Village also maintains local sewer and grading rules. Development over 1/2 acre of new or redevelopment impervious area triggers full WMO review.
View full Skokie rules →Key Facts Comparison
| Fact | Chicago | Skokie |
|---|---|---|
| Code Section | MCC 11-18 | - |
| Volume Capture | First 0.5 inch from impervious surfaces | - |
| Alternative | 15% impervious surface reduction | - |
| Authority | Dept. of Water Management | - |
| Manual | 2024 Stormwater Management Ordinance Manual | - |
| Regulator | - | MWRD / Cook County WMO |
| WMO Trigger | - | 0.5 acre impervious |
| Watershed | - | North Branch Chicago River |
| Illicit Discharge | - | Prohibited |
| Sanitary Sewer | - | No downspout/sump connection |
Highlighted rows indicate differences between cities.
Chicago FAQ
What triggers stormwater management requirements in Chicago?
Regulated developments as defined in MCC 11-18 must submit a stormwater management plan. This generally applies to new construction and significant redevelopment projects that increase impervious surface area.
What BMPs does Chicago accept for stormwater management?
Approved BMPs include green roofs, rain gardens, permeable pavement, bioswales, cisterns, rain barrels, and native landscaping. The 2024 Stormwater Manual provides detailed design guidance.
Skokie FAQ
Who regulates stormwater in Skokie?
The Cook County Watershed Management Ordinance is administered by MWRD. Skokie Public Works also enforces local grading, drainage, and sewer use rules.
Can I tie my downspout into the sewer?
No. Connecting downspouts or sump pumps to the sanitary sewer is prohibited and contributes to combined-sewer overflows. Downspouts should discharge to pervious areas or stormwater systems.
What if my neighbor's water floods my yard?
Report to Skokie Public Works at (847) 933-8427. The Village can investigate whether drainage modifications violate local grading rules. Civil remedies may also be available.
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