No person other than an employee of the water division or the fire department, or an employee of the street department who is engaged in sprinkling or washing the public streets or flushing sewers, shall operate fire hydrants or interfere in any way with the city water system without first obtaining authority to do so from the water division. (Ord. 97-16 § 29, 1997: Ord. B-606 § 42, 1944).