(A) No person may discharge into public sewers any substances capable of causing:
(1) Obstruction of the flow in sewers;
(2) Interference with the operation of treatment plant processes or facilities; or
(3) Excessive loading of the treatment facilities.
(B) No person may discharge into public sewers any substances which may:
(1) Deposit grease or oil in the sewer lines in such a manner so as to clog or partially clog the sewers;
(2) Overload skimming and grease-handling equipment;
(3) Pass to receiving waters without being effectively treated by normal wastewater treatment processes due to nonamenability of the substance to bacterial action; or
(4) Deleteriously affect the treatment process due to excessive quantities.
(C) No person may discharge into public sewers any substance which is:
(1) Not amenable to treatment by the processes and facilities employed; or
(2) Amenable to treatment only to such a degree that the treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharges to receiving waters.
(D) Prohibited discharges include, but are not limited to, materials which exert or cause concentrations of:
(1) Inert suspended solids greater than 250 milligrams per liter, including, but not limited to:
(a) Fuller’s earth;
(b) Lime slurries; and
(c) Lime residues.
(2) Dissolved solids greater than 500 milligrams per liter, including, but not limited to:
(a) Sodium chloride; and
(b) Sodium sulfate.
(3) Excessive discoloration, including, but not limited to:
(a) Dye wastes; or
(b) Vegetable tanning solutions.
(4) BOD, COD or chlorine demands in excess of normal plant capacity.
(E) The approving authority shall regulate the flow for the concentration of slugs when they may:
(1) Impair the treatment process;
(2) Cause damage to collection facilities;
(3) Incur treatment costs exceeding those for normal wastewater; or
(4) Render the waste unfit for stream disposal or industrial use.
(F) No person may discharge into public sewers solid or viscous substances which may violate division (A) above if present in sufficient quantity or size, including, but not limited to:
(1) Ashes;
(2) Cinders;
(3) Sand;
(4) Mud;
(5) Straw;
(6) Shavings;
(7) Metal;
(8) Glass;
(9) Rags;
(10) Feathers;
(11) Tar;
(12) Plastics;
(13) Wood;
(14) Unground garbage;
(15) Whole blood;
(16) Paunch manure;
(17) Hair and fleshings;
(18) Entrails;
(19) Paper products, either whole or ground by garbage grinders;
(20) Slops;
(21) Chemical residues;
(22) Paint residues; or
(23) Bulk solids.
(Prior Code, § 17-308) Penalty, see § 53.99