If you hear any unexplained noises from your toilet when nobody is using it, it’s likely you have a leak. There are a few methods you can use to figure out whether your toilet is leaking. First, open the toilet tank and check the rubber flapper to make sure it is not worn out or otherwise damaged. Next, make sure the water level in the toilet tank is not at risk of overflowing. Finally, one easy do-it-yourself way to check for leaks is to add a few drops of food coloring into the toilet tank, let it sit for at least 25 minutes, then come back and check whether the water in the bowl has changed color.
Whatever the case, a leaking toilet is a cause for concern, as it not only wastes water, it can also cost you hundreds of dollars throughout the year. Whether you need to have a worn-out part replaced or you need extensive repairs, it’s always best to trust a professional plumber.