Sprinkler System Winterization Service -11/22/23. I arrived at the client’s home and took proactive steps to protect the client's irrigation system. Our winterization service was designed to eliminate all water from pipes, sprinkler heads, valves, and the backflow device. This meticulous process prevented freezing, ensuring that the lawn sprinkler system remained intact and ready for action when spring returned. Avoiding costly repairs was achieved through entrusting me with the winterization of the irrigation system.