How Do You Know If You Have A Water Leak Underground. Wet spots in your lawn; Potholes or sinkholes around your home.
Having the equipment makes it easier. Fill up your tanks and cisterns until they are full. 5 you can look for signs of a leak, such as sinkholes or mushy areas of ground, but you may have to have a professional find it.
If your meter does not have a leak indicator, then look at the sweep hand on the face of the meter.
Cracking and breaking of paved areas (like a driveway or concrete slab) There are several ways that both you, as a homeowner, and a plumber can detect the presence of an underground water main leak in your home. Walk around the house and listen for running water. Underground leaks take longer to detect which often leads to mould that releases an unpleased odour.