Foundation and Slab Leaks
Foundation leaks occur in the slab or foundation of you home. They can occur in the incoming water lines or the sewer line. The incoming water line is under constant pressure and often can cause more damage when it leaks than a sewer line. Since the line is under constant pressure the leak will be constant. All faucets, showers, and toilets use this incoming water line. The leak can be caused by many things including a shifting foundation, poorly formed waterlines, and erosion of older water lines.
A Foundation leak in the sewer line will only leak when that line is used. For example when flushing a toilet, or when a drain is being used such as in the shower or sinks in your home. These leaks can be caused by the same things as the incoming water lines and by the different things we put down the drains in our homes such as solvents and cleaners.