Stormwater Management: Oak Park vs Orland Park
How do stormwater management rules compare between Oak Park, IL and Orland Park, IL?
Oak Park and Orland Park 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 →Orland Park, IL
Cook County
Orland Park stormwater management is governed by the Cook County Watershed Management Ordinance (WMO) administered by the Metropolitan Water Reclamation District of Greater Chicago (MWRD), as adopted and enforced locally by the Village. New development and substantial redevelopment must meet detention, water quality, and runoff volume standards. Smaller residential projects must manage runoff on-site without adversely impacting neighbors.
View full Orland Park rules →Key Facts Comparison
| Fact | Oak Park | Orland Park |
|---|---|---|
| Watershed | Des Plaines 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 | - |
| Governing Rule | - | Cook County WMO |
| Administered By | - | MWRD + Village |
| Permit Threshold | - | 0.5 acre disturbance |
| Volume Control | - | First 1 inch capture |
| Public Works | - | (708) 403-6350 |
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.
Orland Park FAQ
Who regulates stormwater in Orland Park?
The Cook County Watershed Management Ordinance administered by MWRD, as enforced locally by the Village. Public Works handles Village stormwater infrastructure.
Do I need a permit to add a patio or driveway extension?
Most small residential projects do not trigger WMO permitting (0.5-acre threshold) but must still manage runoff on-site and comply with Village drainage rules. Building permits cover small projects.
Where do I report a drainage problem?
Contact Orland Park Public Works at (708) 403-6350. Disputes between neighbors over stormwater diversion may also have civil remedies.
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