California Code, Streets and Highways Code - SHC § 10100

(a) Water mains, pipes, conduits, tunnels, hydrants, and other necessary works and appliances for providing water service.

(b) Lines, conduits, and other necessary works and appliances for providing electric power service.

(c) Mains, pipes, and other necessary works and appliances for providing gas service.

(d) Poles, posts, wires, pipes, conduits, lamps, and other necessary works and appliances for lighting purposes.

(e) Any works, utility, or appliances necessary or convenient for providing any other public service.