No person, firm or corporation shall injure, break or remove any section of any manhole, lamp hole, flush tank, catchbasin, or any part of the sewer system, or throw or deposit, or cause to be thrown or deposited, in any sewer opening or receptacle connected with the sewer system, any garbage, dead animals, vegetable parings, ashes, cinders, rags or other matter or thing whatever, except the necessary waste closet paper, liquid house waste and mill-slop, etc. Only toilet paper that is suitable for passage through the sanitary sewers will be permitted.
(1978 Code, ch. 10, sec. 2.A)