No person shall discharge or cause to be discharged the following described waters or wastes to any public sewer:
(a) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
(b) Any waters or wastes containing toxic or poisonous solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant, including but not limited to cyanides in excess of 2 mg/l as CN in the wastes as discharged to the public sewer;
(c) Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage work;
(d) Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, garbage, whole blood, paunch manure, hair and fleshings, entrails, paper dishes, paper cups, paper milk containers, etc., either whole or ground by garbage grinders;
(e) All waters or wastes containing strong acid and pickling waste unless neutralized prior to discharging into these sewers and waters of waste containing solutions of rinse waters from platting processes whether pretreated or not.History: Env. Qual. Comm. Regs., eff prior to 1975, § 10.17.