A slab leak often occurs because copper piping weakens over time and develops pinhole leaks. Hard water can also corrode a pipe and cause a slab leak; Also known as a leak beneath your foundation. It’s not uncommon to experience this type of leaking. That said, it’s also not good and can seriously damage your home with fungus and mold. The negative effects of this to your health, and that of your family, is just one more reason for you to call in NIR Plumbing to repair the leak, stat.