How To Find A Hot Water Leak Underground. This is usually the first sign that you have a slab leak. When the pressurized gas finds a leak, it comes blowing out, producing a loud hiss.
Head out to your water meter, and find the indicator that shows when water is being used. Does the water go down? If the hot water is leaking, it can also create warm spots on the floor.
The sounds leaking water makes in a water line are the key to finding an underground leak.
A hissing noise from reduction in pressure; Once you are sure there are no fixtures leaking you can now go outside to the footpath and locate your water meter. Underground leaks can be difficult to detect, but wet spots along the side of the house, dampness in the slab, or leaking through the slab can be indicators of a leak. If the water leak is severe, though, you may spot some symptoms in your yard.