Why does my toilet keep running?
If it sounds like your toilet is constantly running, you may have a problem with the rubber flapper, which blocks water from entering the bowl. You might also have a problem with the chain, the connection between the flush lever and the handle. There are other possible problems but those are two of the most common. Over time, the flapper may not seal properly due to warping, mineral deposits on the surface or breakage. Whatever the cause, the issue should be addressed immediately as you are potentially wasting gallons of water every day.