Sprinkler System Winterization Service- 11/15/23. Prior to the winter freeze, I took charge of safeguarding our client’s lawn sprinkler system. Our expert winterization service involved a meticulous shutdown process, including the removal of all water from pipes, sprinkler heads, valves, and the backflow device. Entrusting me with this crucial task ensured that the irrigation system remained resilient against freezing temperatures, preventing any potential damage that could result in costly repairs.