(A) No person may discharge to public sewers any waste which by itself or by interaction with other wastes may:
(1) Injure or interfere with wastewater treatment processes or facilities;
(2) Constitute a hazard to humans or animals; or
(3) Create a hazard in the receiving waters of the wastewater plant effluent.
(B) Any new connection from inflow sources into the sanitary sewer portion of the sewer system shall be prohibited.
(C) No discharge to public sewers may contain:
(1) Cyanide greater than 1.0 milligrams per liter;
(2) Fluoride, other than that contained in the public water supply;
(3) Chlorides in concentrations greater than 250 milligrams per liter;
(4) Gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquids, solids or gases; or
(5) Substances causing an excessive chemical oxygen demand (COD).
(D) No waste or wastewater discharged to public waters may contain:
(1) Strong acid, iron pickling wastes or concentrated plating solutions, whether neutralized or not;
(2) Fats, waxes, greases or oils, whether emulsified or not, in excess of 100 milligrams per liter or containing substances which may solidify or become viscous at temperatures between 32°F and 150°F, or 0°C and 65°C;
(3) Objectionable or toxic substances exerting an excessive chlorine requirement to such a degree that any such material received in the composite wastewater at the 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 division (A) above.
(E) 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 or personnel at the wastewater facilities.
(F) No discharges may contain concentrations of heavy metals greater than the amounts specified in § 53.26(D) of this chapter.
(G) Prohibited heavy metals and toxic materials include, but are not limited to:
(1) Antimony;
(2) Beryllium;
(3) Bismuth;
(4) Cobalt;
(5) Molybdenum;
(6) Rhenium;
(7) Strontium;
(8) Tellurium;
(9) Tin;
(10) Uranyl ion;
(11) Herbicides;
(12) Fungicides; and
(13) Pesticides.
(Prior Code, § 17-302) Penalty, see § 53.99