Stormwater Management: Oak Park vs Skokie
How do stormwater management rules compare between Oak Park, IL and Skokie, IL?
Oak Park and Skokie have similar restriction levels.
Oak Park, IL
Cook County
Oak Park has comprehensive stormwater management regulations to address flooding concerns, particularly related to the Des Plaines River watershed and combined sewer system. Property owners must manage stormwater runoff from new construction and significant improvements. The village participates in the Metropolitan Water Reclamation District's stormwater management program.
View full Oak Park 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 | Oak Park | Skokie |
|---|---|---|
| Watershed | Des Plaines River | North Branch Chicago River |
| Sewer System | Combined (stormwater + sanitary) | - |
| Regional Authority | MWRD of Greater Chicago | - |
| Green Infrastructure | Rebates may be available | - |
| Disturbance Threshold | 0.5 acres triggers plan requirement | - |
| Regulator | - | MWRD / Cook County WMO |
| WMO Trigger | - | 0.5 acre impervious |
| Illicit Discharge | - | Prohibited |
| Sanitary Sewer | - | No downspout/sump connection |
Highlighted rows indicate differences between cities.
Oak Park FAQ
Why does Oak Park have stormwater management requirements?
Oak Park is in the Des Plaines River watershed with a combined sewer system prone to overload during heavy rain. Stormwater management reduces flooding risk and sewer backups that have historically affected the village.
Are there rebates for rain barrels or rain gardens?
Yes, the MWRD Green Infrastructure Program may offer rebates for residential stormwater management improvements like rain barrels, downspout disconnection, and rain gardens. Contact the village or MWRD for current program availability.
Where should my sump pump discharge?
Sump pump discharge should be directed to your yard or an appropriate drainage area, not onto neighboring properties or directly into the sanitary sewer. The village can provide guidance on proper discharge locations.
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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