It shall be unlawful to place in any water closet, or allow to enter any soil pipe any paper other than what is commonly known as toilet paper or material or substance likely to block, obstruct the flow or damage the pipeline or sewerage system or to dispose of any flammable, noxious or chemically active material harmful to life or property into the sewerage system.
('86 Code, § 17.203.6) Penalty, see § 51.99