Environmental Rules in Arlington Heights, IL: What Residents Actually Need to Know

If you live in Arlington Heights or are thinking about moving there, environmental rules are one of those things you probably won't think about until they affect you directly. Arlington Heights has 4 specific rules on the books covering different aspects of environmental rules, and some of them might surprise you.

Stormwater Management

Arlington Heights enforces comprehensive stormwater management regulations. Development and significant improvements must include stormwater detention or retention facilities. The Village participates in the MWRD stormwater management program and the Cook County Watershed Management Ordinance applies. Grading and drainage plans are required for new construction and major renovations.

Key details: Detention Trigger: 2,500+ sq ft new impervious area. Design Storm: 100-year event. Watersheds: Salt Creek and Des Plaines River. MWRD Compliance: Required. Public Works Contact: (847) 368-5800.

Failure to install required stormwater detention facilities may result in a stop-work order and denial of occupancy permits. Altering drainage patterns that cause flooding on adjacent properties may result in enforcement action and fines. Discharging sump pump water onto sidewalks where it creates icing hazards may result in citations. Contact Public Works at (847) 368-5800.

Compared to other cities, Arlington Heights takes a harder line on stormwater management. The enforcement and penalty structure reflects that.

Erosion Control

Arlington Heights requires erosion and sediment control measures on all construction sites. Soil erosion and sediment control plans must be submitted with building permit applications for projects that disturb more than 5,000 square feet of earth. Silt fencing, stabilized construction entrances, and sediment basins are among the required best management practices.

Key details: Plan Required: When disturbing 5,000+ sq ft. NPDES Permit: Required for 1+ acre disturbance. Silt Fence: Required on downslope perimeter. Stabilization Deadline: 14 days after final grading. Performance Bond: May be required for large projects.

Failure to install or maintain erosion control measures may result in a stop-work order until corrections are made. Fines may apply for sediment discharge into streets, storm sewers, or waterways. Repeated violations may result in permit revocation. Projects without required NPDES permits face state-level penalties. Contact Community Development at (847) 368-5100.

Grading & Drainage

Arlington Heights requires grading and drainage plans for new construction and significant site modifications. All grading must maintain positive drainage away from structures and must not redirect water onto neighboring properties. A grading permit is required for earth-moving activities that alter the existing drainage patterns on residential property.

Key details: Grading Plan: Required for new construction. Foundation Slope: Minimum 2% for 10 feet. Retaining Wall Permit: Required if over 4 feet. Neighbor Drainage: Cannot redirect water onto adjacent lots. Engineering Contact: (847) 368-5800.

Grading without a permit or in violation of approved plans may result in a stop-work order and fines. Property owners may be required to re-grade at their own expense if work causes drainage problems on adjacent properties. Fines range from $100 to $500 per violation. Contact Engineering at (847) 368-5800.

Flood Zones

Arlington Heights participates in the National Flood Insurance Program and enforces a floodplain management ordinance. Properties in FEMA-designated Special Flood Hazard Areas along Salt Creek and its tributaries are subject to strict building restrictions including elevation requirements, flood-proofing standards, and prohibitions on certain types of development in the floodway.

Key details: NFIP Participation: Yes, with CRS discount. Freeboard Requirement: 1 foot above BFE. Floodway Construction: Prohibited. Substantial Improvement: 50% of market value. Compensatory Storage: 1:1 ratio required for fill.

Development in the floodplain without a permit is a serious violation subject to fines and orders to restore the floodplain to its pre-development condition. Non-compliant construction may be ordered removed. Violations may affect the entire community's NFIP standing and flood insurance availability. Contact Engineering at (847) 368-5800.

This is not one of those rules that cities tend to ignore. Arlington Heights actively enforces its flood zones requirements.

The Bottom Line

Arlington Heights is tougher than many cities when it comes to environmental rules. Out of the 4 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Arlington Heights, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

All of the above reflects Arlington Heights's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.