A backup means waste water is reversing direction — rising out of a drain instead of flowing away. Where it appears tells you a lot: a backup in one sink is local, while a backup at the floor drain or tub usually means something further down the system.
Our job is to clear the backup and help you understand why it happened, so you can reduce the chance of it happening again.
Common signs
- Water rising in the tub when the toilet flushes
- Dishwasher or washing-machine water appearing at a sink
- Dirty water pooling around a basement drain
- Recurring backups after heavy water use
What usually causes it
Downstream blockage
A clog lower in the system forces water out of the nearest lower opening.
Venting problems
Blocked plumbing vents can cause slow drainage and gurgling that resembles a backup.
Municipal surcharge
During extreme storms, sewer system pressure can push water back toward homes.
What to expect when you call
Note which fixtures backed up, and what was running at the time — this helps narrow down the location quickly.
Avoid running water until the backup is cleared.
In Mississauga
Homes with basement apartments, common in Cooksville and Meadowvale, often notice backups first in the lower unit. If you're a tenant, let your landlord know right away. See our Mississauga service area for more.