THE GUIDE / Kitchen & bath
What to do when a toilet overflows
An overflowing toilet can spread contaminated water quickly. The first priority is to prevent another flush.
What you can check
- 01
Do not flush again. If safe and accessible, gently close the toilet’s shutoff valve; do not force it.
- 02
Keep people and pets away. Put on gloves and use towels to contain water away from nearby rooms.
- 03
If the water level settles and no chemicals have been used, a toilet plunger may clear a simple blockage. Stop if water rises again.
Safety first
Treat overflow as potentially contaminated. Keep clear if water reaches electrical outlets and do not mix or splash chemical cleaners.
When to ask for help
Call a plumber promptly for recurring overflow, sewage, multiple backed-up fixtures or a shutoff that will not close.
Ask about this issueGeneral guidance only. Every home is different; stop if you are unsure or conditions are unsafe.