(A) No person shall discharge or cause to be discharged any storm water, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer.
(B) Storm water and all other unpolluted drainage shall be discharged to the sewers as are specifically storm sewers or to a natural outlet approved by the Superintendent. Industrial cooling water or unpolluted process waters may be discharged, on approval of the Superintendent, to a storm sewer, combined sewer or natural outlet.
(C) No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers.
(1) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
(2) 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.
(3) Any waters or wastes having pH lower than 5.5 or having any other corrosive property 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, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers and the like, either whole or ground by garbage grinders.
(D) No person shall discharge or cause to be discharged the following substances, materials, waters or wastes if it appears likely in the opinion of the Superintendent that the wastes can harm either the sewers, sewage treatment process or equipment, have an adverse effect on the receiving stream or can otherwise endanger life, limb, public property or constitute a nuisance. In forming his or her opinion as to the acceptability of these wastes, the Superintendent will give consideration to the factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant and other pertinent factors. The substances prohibited are:
(1) Any liquid or vapor having a temperature higher than 150F (65C);
(2) Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32 and 150F (0 and 65C);
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of 3/4 horsepower (0.76 HP metric) or greater shall be subject to the review and approval of the Superintendent;
(4) Any waters or wastes containing strong acid iron pickling wastes or concentrated plating solutions whether neutralized or not;
(5) Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances or wastes exerting an excessive chlorine requirement, to the degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the Superintendent for the materials;
(6) Any waters or wastes containing phenols or other taste- or odor-producing substances, in concentrations exceeding limits which may be established by the Superintendent as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal or other
public agencies of jurisdiction for discharge to the receiving waters;
(7) Any radioactive wastes or isotopes of a half life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations;
(8) Any waters or wastes having pH in excess of 9 or lower than 5;
(9) Materials which exert or cause:
(a) Unusual concentrations of inert, suspended solids (such as, but not limited to, Fullers earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate);
(b) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions);
(c) Unusual B.O.D., chemical oxygen demand or chlorine requirements in quantities as to constitute a significant loan on the sewage treatment works; or
(d) Unusual volume of flow or concentration of wastes constituting slugs as defined herein.
(10) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed or are amenable to treatment only to the degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters; and
(11) Notwithstanding the foregoing, the levels of the pollutants shall not exceed standards now or hereafter established by the State of Indiana or the United States government and regulatory agencies thereof.
(1982 Code, § 14-11) Penalty, see § 51.99