First moves, in order
- Kill power to the basement
Water and energized outlets share the room. If the panel is in the basement, ComEd or an electrician cuts power safely; nobody wades in first.
- Do not touch sewage water
Backups carry bacteria, viruses, and chemicals. Kids and pets stay upstairs; anything the water touched is contaminated until disinfected.
- Report it
In the city, call 311 or file at 311.chicago.gov; the report documents the event for claims and pressures the block-level infrastructure record. Suburbs: your public works department.
- Call your carrier and check for sewer backup coverage
Backup coverage is an endorsement, not automatic. Overland flood is a separate FEMA policy. Knowing which event you had shapes the whole claim.
- Photograph before pumping
Water line height, damaged items, the drain it came from. Thirty photos now prevent thirty arguments later.
- Get extraction started within hours
Mold germinates in 24 to 48 hours, and every hour of saturation wicks water higher into drywall and framing.
Why sewer water changes everything
Restoration classifies water by contamination. Category 1 is clean supply water. Category 2 is grey water from appliances. Category 3, which includes any sewer backup and most overland flooding, is grossly contaminated. The category dictates the scope: with Category 3, porous materials that absorbed water, carpet and pad, drywall below the water line plus a margin, insulation, particleboard, come out. They cannot be disinfected from the inside. Hard surfaces get cleaned and treated with antimicrobials, then the structure dries under containment. Companies that fog some deodorizer over wet carpet and leave are why so many Chicago basements grow mold and odor by fall.
Our cleanup process
- Emergency extraction
Truck-mounted and submersible pumps remove standing water fast, day or night.
- Contaminated material removal
Flood-cut drywall, carpet, pad, and saturated porous contents out, documented item by item for your claim.
- Clean and disinfect
Every affected hard surface washed and treated with hospital-grade antimicrobials; contents triaged for restoration versus loss schedule.
- Structural drying
Air movers and dehumidifiers sized to the cubic footage, with daily moisture readings on framing and slab until numbers, not vibes, say dry.
- Verification and rebuild handoff
Final moisture map and photos close the mitigation file; reconstruction proceeds on a dry, disinfected structure.
Why Chicago basements flood
Chicago runs a combined sewer system: stormwater and sanitary flow share pipes, and when an intense storm outruns capacity, even with Deep Tunnel storage, the surplus looks for the lowest opening on the block, which is your floor drain. Add clay soils that shed water toward foundations, flat grades, aging laterals invaded by tree roots, and spring snowmelt on frozen ground, and basement flooding is a structural feature of the region, not bad luck. That is also the honest argument for prevention hardware, which insurance-savvy owners install after the first claim, not the third.
Lowering the odds next time
- Overhead sewer conversion or backwater valve. The definitive fixes for backup-prone homes; some suburbs offer rebate programs.
- Sump pump with battery or water-powered backup. Storms that flood basements also knock out power; a pump without backup is a fair-weather friend.
- Downspout and grading discipline. Water directed six feet from the foundation is water your drain tile never meets.
- Sewer backup endorsement on your policy. Costs little, and it is the coverage line this entire page depends on.
