It shall be unlawful for any person to interfere or seek to interfere with any inspection by the city engineer or his designated representative of any fixture or water using or distributing device to which city water is connected; provided, that before entering occupied dwellings or premises for the purpose of making an inspection, the consent of the occupant thereof shall be secured or twenty-four hours' written notice of the intention to so enter and inspect shall be served upon the occupant by the city engineer or his designated representative. (Ord. No. 952, § 2.)