All persons connecting to the city water system or laying their private mains thereto, are required to use approved galvanized standard pipe, up to and including two inches (2") in nominal internal diameter, and cast iron water main in case of larger sizes, all as approved by the city. That portion of all service connections provided by the water consumer or private water mains laid with permission of the city shall, before water is turned on thereto, be inspected and approved by the representative of the city. (Ord. 529, 11-2-1965)