A toilet that is constantly refilling is not only annoying, but it can also have a huge impact on your water bill. The refilling is a sign that you have a leak in your toilet tank. These leaks are normally easy to remedy as long as you know what to look for and do some basic troubleshooting.
The first step is to check the flapper. This is the plastic or rubber valve located at the bottom of the tank. It should close completely when you are not flushing the tank.
The next step is to ensure that the chain is properly attached to the flapper. If the chain is tangled or too short, the flapper will not close completely. Remove any kinks in the chain, adjust the length as needed, and try flushing again to see if this solves the problem.
If you still have a leak after trying these remedies, you may need to replace the fill valve. Over time, the valve can become brittle or leak, which allows water to trickle into the tank slowly. Replacing the fill valve is a relatively easy process, but you do need to turn off the water to the toilet before you begin.
Even if you do not have a leak, it is a good idea to replace your flapper and fill valve every few years.