A pinhole in a copper water line under four inches of concrete can waste hundreds of gallons a day without leaving a single puddle. By the time most homeowners notice a warm floor or a shocking water bill, the damage has been building for weeks. Smart slab leak repair Lake Elsinore homeowners can rely on comes down to three things: catching the leak early, pinpointing it without tearing up the house, and choosing the right fix. Waiting is the most expensive option.