The sewer system shall be kept in repair by the public works director and no other person, unless authorized by the public works director, shall work on or operate said system or any part thereof. It shall be the public works director's duty, at all times, to maintain said system in such a working condition that the sewage of the city is efficiently and sanitarily carried from the premises of the users of said system and processed in the sewer treatment plant owned and operated by the city. (Ord. 383, 2-4-1988)