As a native Texan, I never winterized my system. Never had a need to. And with global warming (whether you believe in it or not), you probably won’t have to worry. Worry about whether you will have water to run thru it. However, as a Northwesterner for almost ten years, winterizing is imperative. If you ever anticipate extended cold temperatures say 20-25 degrees in your winter, then prep. Turn off your source, create an air gap to your distribution system and blow out those lines. May seem extreme, but it takes me one hour to clear my entire system. The next Spring, and a week before water becomes available, I reconnect everything, perform an air pressure test to confirm no leaks. Then when my water source comes up to pressure, everything is ready to go. One side benefit to this process is blowing out some of the silt accumulation in my distribution lines. Good luck!
