Seeing water rise out of the basement floor drain is stressful. Here's what to do, in order.
1. Stay safe
Backup water may contain sewage. Avoid touching it, keep children and pets out of the area, and don't walk through water near electrical outlets, appliances or a panel. If you're unsure whether it's safe, stay out and call your utility.
2. Stop using water
Every flush, shower and load of laundry upstairs adds water that has nowhere to go but your basement. Ask everyone in the home to stop until the problem is resolved.
3. Figure out the type of backup
If it's happening during heavy rain, it may be storm-related. If it happens on a dry day after laundry or a shower, the cause is more likely a blockage in your own main line.
4. Document it
Take photos and video before you move anything. Your insurer will want them, and sewer backup coverage varies between policies.
5. Call for help
Mississauga Drain is open 24 hours. Call (647) 557-8045 and describe what you're seeing. Learn more about our basement drain backup service.
6. Afterwards
Ask about prevention. A backwater valve, keeping the main line clear and disconnecting downspouts from the sewer (where permitted) can reduce future risk. The City of Mississauga and Region of Peel publish flood-prevention guidance worth reading.