I'm actually surprised you are on municipal water!
When you get out into the country in East Texas your water needs are generally met by a subscriber owned water co-op. Most are small and only cater to a limited area. If your house is a long way from their supply line, it gets pretty expensive to run water line from the road to the house. In those cases people sometimes drill domestic water wells but it isn't all that common. Most people are like me and have a water well for topping up the lake and irrigation. My grass is always green even in the height of the Texas summer.
Well, it seems that I was wrong. It used to be co-op owned but the "all knowing one" tells me that a couple of years ago the State started organizing all the small, independent water companies into "Special Utility Companies" which gives them some sort of Federal tax break and allows access to Federal funds. Just say that I don't know what is going on around here.