§ 53.21  CHEMICAL DISCHARGES.
   (A)   No discharge to public sewers may contain:
      (1)   Cyanide greater than 1.0 mg/l;
      (2)   Fluoride other than that contained in the public water supply;
      (3)   Chlorides in concentrations greater than 250 mg/l;
      (4)   Gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas; or
      (5)   Substances causing an excessive chemical oxygen demand.
   (B)   No waste or wastewater discharged to waters in the state may contain:
      (1)   Strong acid, iron pickling wastes, or concentrated plating solutions, whether neutralized or not;
      (2)   Fats, wax, grease, or oil, whether emulsified or not, in excess of l00 mg/l or containing substances which may solidify or become viscous at temperatures between 32 and 150°F (0 and 65°C);
      (3)   Objectionable or toxic substances, exerting an excessive chlorine requirement, to such degree that any such material received in the composite wastewater treatment works exceeds the limits established by the approving authority for such materials; or
      (4)   Obnoxious, toxic, or poisonous solids, liquids, or gases in quantities sufficient to violate the provisions of § 53.20(A) of this chapter.
   (C)   No waste, wastewater, or other substance may be discharged into public sewers which has a pH lower than 5.5 or higher than 9.5, or any other corrosive property capable of causing damage or hazard to structures, equipment, and/or personnel at the wastewater facilities.
   (D)   All waste, wastewater, or other substance containing phenols, hydrogen sulfide, or other taste and odor-producing substances shall conform to concentration limits established by the approving authority. After treatment of the composite waste-water, concentration limits may not exceed the requirements established by state, federal, or other agencies with jurisdiction over discharges to receiving waters.
(Ord. 2011-01, passed 1-25-11)  Penalty, see § 53.99