What do you if your toilet fills up with water but go down?

* Check the flapper valve. The flapper valve is a rubber or plastic seal that sits at the bottom of the toilet tank. It opens when you flush the toilet, allowing water to flow into the bowl. If the flapper valve is not sealing properly, it will prevent the water from draining from the tank. You can check the flapper valve by lifting it up and looking for any cracks or tears. If the flapper valve is damaged, you will need to replace it.

* Check the toilet drain. The toilet drain is the pipe that carries water from the toilet bowl to the sewer. If the toilet drain is clogged, it will prevent the water from draining from the bowl. You can check the toilet drain by pouring a bucket of water into the toilet bowl. If the water does not drain, the drain is likely clogged. You can try to clear the drain by using a plunger or a drain snake.

* Check the vent pipe. The vent pipe is a pipe that allows air to enter the toilet system. If the vent pipe is clogged, it will create a vacuum that will prevent the water from draining from the bowl. You can check the vent pipe by looking on the roof of your house for a pipe that is about 4 inches in diameter. If the pipe is clogged, you will need to clear it by using a broom or a garden hose.

* Call a plumber. If you cannot clear the clog yourself, you should call a plumber. A plumber will be able to diagnose the problem and fix it quickly.

Here are some additional tips that you may find helpful:

* If the clog is caused by something that has been dropped into the toilet, such as a toy or a toothbrush, you may be able to retrieve the object with a toilet snake.

* If the clog is caused by grease or hair, you may be able to clear it by pouring a cup of baking soda and a cup of vinegar into the toilet bowl. Let the mixture sit for 30 minutes, then flush the toilet.

* If the clog is caused by a tree root, you will need to call a plumber to have the root removed.