Do you have a high water bill? Do you hear a faint hissing sound like water running in the wall or underneath a cabinet? Do you have a warm spot on your floor? Is the ground near your foundation unusually saturated? All of these can be symptoms of a slab leak if you have a slab foundation. Specifically: a leak on the pressurized fresh water pipes that deliver water to all of the faucets in your house.
Most houses in the North Dallas, Mckinney/Frisco area (built before 2010) have copper water lines. If you have a concrete slab as the foundation of your house and if your house was plumbed with copper water lines, then those copper pipes run underneath the foundation. Finding and fixing these pipes when they develop a leak can be challenging because they are not easily accessible. This article goes through some of the different ways these leaks are resolved. The best solution for you will depend a lot on the way your house is constructed and where the leak is located.