Sewer Backup Cleanup: What to Do
Treat any sewer backup as a Category 3 biohazard. Do not attempt to clean it yourself. Keep people and pets out of the affected area, open windows to ventilate, and call a professional biohazard cleanup team. Porous materials that contacted sewage usually can't be safely salvaged.
Or call (773) 389-7455 for immediate helpStep-by-step
- 1
Evacuate and ventilate the area
Sewage releases dangerous gases. Open windows and keep occupants away.
- 2
Do not handle the water
Sewer water contains bacteria, viruses, and parasites. Professionals use PPE for a reason.
- 3
Call professional cleanup
We dispatch with full PPE and Category 3 extraction equipment.
- 4
Photograph from a safe distance
Document for insurance without entering the contaminated area.
- 5
Notify your carrier
Check whether you carry a sewer-backup endorsement.
Safety considerations
- Don't eat, drink, or smoke near a sewer backup.
- Wash thoroughly if you accidentally contacted any of the water.
- Children and pets must be kept completely away from the area.
Insurance & process notes
Sewer backup is usually only covered if you carry a specific endorsement. Document the cause and the carrier will determine coverage.
When to call immediately
- Black or gray water has come through a floor drain, toilet, shower, or ejector system
- More than one drain is backing up at once or the odor is strong enough to affect adjoining rooms
- Any porous flooring, drywall, furniture, or stored items have been touched by the contaminated water
Mistakes to avoid
- Treating sewage like ordinary water damage and trying to mop or shop-vac it without PPE and containment
- Keeping contaminated porous items because they look dry later, even though the health risk remains
- Waiting to open the claim until after cleanup, which weakens documentation on a coverage-sensitive loss type
Chicagoland context
Sewer backups are especially relevant in older Chicagoland neighborhoods during major rain events, municipal surcharges, and root-blocked main lines. Coverage often depends on a sewer-backup endorsement, so good documentation at the beginning of the loss is essential.