It shall be unlawful for any person to:
(1) break, damage, destroy, uncover, deface, or tamper with any equipment or materials belonging to the city and used or intended to be used for the purposes of making measurements, test or examination of sewer or wastes;
(2) remove, damage or interfere with the functioning of any pipe or main, manhole, manhole cover, building, apparatus or equipment used in the collection, conveyance ortreatment of sewage or industrial wastes;
(3) place or cause to be placed in any manhole or sewer pipe or main any material which results, or is likely to result, in the stopping or obstructing of the normal flow of sewage or wastes. (Ord. of 4/5/77, Div. III, Art. 6)