Sewage backups involve contaminated water and should be treated as a health hazard. Avoid contact, keep children and pets away and don't attempt to clean it with household tools.
We remove contaminated water and affected materials, clean and sanitize surfaces, and dry the area — using protective equipment throughout.
Common causes
- Municipal sewer surcharge during heavy rain
- Blocked or collapsed sewer laterals
- Tree roots in drain lines
- Missing or failed backwater valves
How we approach sewage backup cleanup
- 01
Contain
Restrict access and limit spread of contaminated water to unaffected areas.
- 02
Remove
Extract sewage water and remove porous materials that can't be safely cleaned.
- 03
Clean & sanitize
Clean and apply appropriate antimicrobial treatment to affected surfaces.
- 04
Dry
Dry the structure and confirm moisture levels before rebuilding.
Local considerations in Markham
During intense storms, sanitary sewers in parts of the GTA can surcharge and push water back through basement floor drains. Backwater valves can reduce this risk — ask your plumber whether your home has one.
We serve properties across Markham, including Unionville, Cornell, Milliken, Wismer, Berczy Village, Markham Village and more. See our service areas for details.
Safety reminder
Never enter standing water that may be in contact with electricity. Treat water from outside, drains or sewers as contaminated and avoid direct contact.