Why sewer backups happen
- Blockages from grease, wipes or roots in the lateral
- Heavy rainfall surcharging the sewer system
- Failed or missing backwater valves
Why sewage is different
Sewage can contain bacteria, viruses and other contaminants. Porous materials it touches — carpet, insulation, drywall — are typically removed rather than cleaned.
What to do
- Stay out of the affected area and keep others away.
- Stop using plumbing fixtures that drain to the line.
- Call a plumber to clear and inspect the line.
- Call a restoration company for cleanup.
Reducing the risk next time
Ask a plumber whether a backwater valve is appropriate for your home, and avoid putting grease or wipes down drains. The Town of Richmond Hill may offer information about sewer backup prevention.
This article is general information, not professional, medical or insurance advice. For an emergency, call us 24/7 or return to the homepage.