For the purpose of this article, the following definition shall apply unless the context clearly indicates or requires a different meaning.
PLUMBING. The installation of gas or water pipes, fixtures, apparatus and the necessary connections either for supplying gas or water to premises or for the removing of liquid and water-borne wastes from premises in the city, or both such purposes, and shall also denote installed fixtures, drainage and vent systems and gas or water distribution systems as the case may be.