As one of the most important systems in the home, the plumbing system must be properly maintained or problems can develop causing a homeowner a big headache. One of the most annoying plumbing problems is a toilet leak. A toilet leak is not only frustrating, but it can waste water and increase your water bill. Signs of a toilet leak can include: sounds coming from the toilet when it is not running, a homeowner has to keep the handle pressed so that the tank will empty, the water is running over the top of the overflow, water is running down the sides of toilet even when there is flushing, and the toilet continues to run even though the handle has not been pressed. These are visible indications that you may have a toilet leak; however, you can still have a toilet leak and not see or hear it. This type of leak is called a silent toilet leak. To properly diagnose a silent toilet leak there are a couple of tests that you can perform: