Environmental Rules in Tinley Park, IL (2026)
4 verified environmental rules for Tinley Park, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Tinley Park is subject to the Metropolitan Water Reclamation District of Greater Chicago (MWRD) Watershed Management Ordinance (WMO), which regulates stormwater detention, volume control, floodplain, and wetland impacts. Development disturbing 0.5 acres or creating significant impervious surface triggers WMO permit review. The Village enforces local stormwater standards and illicit discharge prohibitions.
Tinley Park Stormwater Management
Some RestrictionsErosion Control
Tinley Park requires erosion and sediment control measures on construction sites disturbing soil under MWRD Watershed Management Ordinance standards. Silt fence, inlet protection, construction entrance stabilization, and permanent stabilization within 14 days of final grading are typical requirements. Projects disturbing 1 acre or more require Illinois EPA NPDES Construction General Permit coverage.
Tinley Park Erosion Control
Some RestrictionsFlood Zones
Tinley Park participates in the National Flood Insurance Program and enforces floodplain development regulations for areas mapped as Special Flood Hazard Areas on FEMA Flood Insurance Rate Maps. Tinley Creek and its tributaries include mapped flood zones. New construction in the floodplain must meet elevation, floodproofing, and compensatory storage requirements. A floodplain development permit is required for any construction in the SFHA.
Tinley Park Flood Zones & FEMA Rules
Heavy RestrictionsGrading & Drainage
Tinley Park regulates grading and drainage on residential properties to prevent water from being directed onto neighboring lots or creating flooding. Minor grade changes typically do not require a permit, but substantial grading requires a permit and must not alter established drainage patterns. Sump pump and downspout discharge must be directed to lawns or storm sewer, not onto neighbors or sanitary sewer.
Tinley Park Grading & Drainage Rules
Some RestrictionsLooking for Cook County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Tinley Park city rules.
Environmental Rules in Cook County →