Sewage cleanup prices (2026)
| Situation | Typical cost* |
|---|---|
| Toilet overflow, one bathroom | $1,000 – $3,000 |
| Floor-drain backup, unfinished basement | $2,500 – $6,000 |
| Sewer backup, part of a finished basement | $5,000 – $9,000 |
| Sewer backup, whole finished basement | $7,000 – $15,000+ |
*Typical GTA ranges, before 13% HST. Your exact price depends on what we find on site. Insurance jobs are written in Xactimate at the adjuster's approved Toronto price list.
Basement sewage cleanup cost: why it costs more than clean water
- Porous materials come out. Carpet, pad, drywall at the bottom of the walls and insulation touched by sewage can't be safely cleaned, so they're removed.
- Protection. Technicians wear full PPE and the area is contained, often with HEPA air scrubbers.
- Disinfection. Every remaining surface is cleaned and treated with antimicrobial.
- Disposal. Contaminated materials are bagged and removed.
- Per-sq-ft rates are higher: extraction around $1.90 vs $1.10 for clean water, flood cut around $2.10 vs $1.60.
Insurance and city programs
Sewer backup is only covered if your policy has a sewer backup endorsement. Check before you call your insurer. Toronto and several GTA cities also offer subsidies for backwater valves and sump pumps that prevent the next backup; check your city's current program. See our sewage backup cleanup service and basement flood cleanup cost.