You bet. Not only is it annoying to listen to, it’s a waste of water and money. Leaky toilets can add up on your water bills. If the toilet continues to run after the toilet is flushed, it indicates that some part of the internal mechanism is out of order or broken. Often a little jiggling of the toilet handle solves the problem. Sometimes a simple part needs to be replaced. The worst-case scenario is that the entire mechanism needs to be replaced. No matter what the cause, contact a professional plumber to diagnose and fix the problem.