"Plumbing" means the practice, materials, and fixtures used in the installation, maintenance, extension, and alteration of all piping, fixtures, appliances, and appurtenances in connection with any of the following: sanitary drainage facilities, the venting system, and the public or private water supply systems within or adjacent to any building, structures, or conveyance; also the practice and materials used in the installations, maintenance, extension, or alteration of the liquid waste or sewage and water supply systems of any premises to their connections with any point of a public sewer or other disposal system.
(Prior code § 17.08.170 (Ord. 503 § 1.5(16), 1961))