The office of inspector of plumbing is hereby created and shall be filled and the duties of the office performed by some person appointed by the city manager. Such inspector shall make inspection and testing of all plumbing and sewer connections done within the city and shall have the right to deputize any person equally qualified to make the actual inspections and report. He may and shall carry out the performance of this chapter. The testing of plumbing shall be done by filling all drains with water to the roof, and such other tests as the inspector shall deem necessary. (2000 Code § 5-208)