Inspects, repairs, replaces, and adjusts water control valves, meters, regulators, valve boxes, meter boxes, rain gutters, catch basins, grease traps, sumps and drain and sewer lines at various DES facilities. Perform plumbing work involving the installation, repair, and maintenance of water, sewer, drainage, and other plumbing systems in the facilities and on the grounds of the Neal Blaisdell Center, Waikiki Shell, Honolulu Zoo and various City and County golf courses.