If your toilet begins to overflow – immediately lift the lid of the toilet tank and pull up on the float. This will immediately stop any more water from flowing into the toilet bowl. You may then need to have someone else reach behind the toilet to turn off the water supply which completely stops any more water from getting into the tank and the bowl.

Tip: The water in your toilet’s tank is clean.

Why Is My Toilet Overflowing When I Flush?

The 3 most common reasons that your toilet may be overflowing are…

  1. A blocked vent pipe
  2. A problem with the toilet float in your tank
  3. A clog in the toilet or drain pipe
  4. Make sure the water valve behind the toilet is turned off.
  5. Wait 20 – 30 minutes (sometimes less) and the water in the bowl should go down enough for you to use a plunger.
  6. Use the plunger slowly at first and continue doing so until the water level goes down even further.
  7. Flush the toilet to ensure that it will drain.
  8. Once you’re sure you are in the clear, turn the water valve back on.
  9. Flush the toilet again and hopefully everything is working fine.