Leaking pipes are the sort of issue that can spiral out of control if not taken care of immediately. Leaking pipes can lead to a host of other problems that will cost a large sum of money. Leaking pipes, when not caught early fixed quickly can lead to: Cosmetic Damage, such as walls with water stains. Possibly structural damage, if the leak goes on long enough, building materials can become soft and structurally compromised. A Drop in water pressure is one of the first signs of a leaking pipe and a qualified plumber should be called immediately.