Flood risk, local cost data, climate factors, and insurance context for your ZIP code.
Flood Risk
High
Cost Range
$2,000–$11,000
Avg Response
48 min
NFIP
State participates
Chicago's combined sewer system (storm + sewage in same pipes) backs up into basements during heavy rain 20–30 times per year; Lake Michigan storm surge creates North Shore coastal flooding; flat terrain provides no natural drainage; severe thunderstorm season April–August
Flood-prone areas: Humboldt Park, Austin, Roseland, and all areas along the North Shore lakefront face highest flood risk; basement apartments throughout Chicago are at high risk from combined sewer backup
Extraction & drying cost per square foot by IICRC water category
| Water Category | $/sq ft |
|---|---|
| Category 1 — Clean Burst supply line, clean appliance overflow | $3.19–$8.43 |
| Category 2 — Gray Dishwasher, washing machine, toilet bowl (no feces) | $8.43–$10.21 |
| Category 3 — Black Sewage backup, floodwater, toilet overflow with feces | $11.98–$15.4 |
Estimates exclude reconstruction (drywall, flooring replacement). National benchmarks: Cat 1 $3.75–$4.25, Cat 2 $4.10–$6.50, Cat 3 $7–$7.50/sq ft — adjusted for Chicago market (3.75–14/sq ft range).
