(a) Plans and Specifications. No permit shall be issued until plans and specifications showing the proposed work in necessary detail have been submitted to the Director of Public Service and Safety. If a permit is denied, the applicant may submit revised plans and specifications without payment of an additional fee. If, in the course of the work, it is found necessary to make any change from the plans and specifications on which a permit has been issued, amended plans and specifications shall be submitted and a supplementary permit, subject to the same conditions applicable to original application for permit, shall be issued to cover the change.
(b) Repairs. Repairs involving only the working parts of a faucet or valve, the clearance of stoppages, repairing of leaks, or replacement of defective faucets, valves or fixtures in same location may be made without a permit provided no changes are made in the piping to the fixtures.
(c) Protection of Water System. The Director shall make such rules and regulations in furtherance of the purposes of this chapter and not inconsistent with the specific provisions of this chapter, for the installation, repair or alteration of air-conditioning systems, water- treatment equipment, and water-operated devices as may be deemed necessary to properly protect the water-supply system.