(A) No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater, which will interfere with the operation or performance, or pass-through of the POTW.
(B) In addition, the following pollutants shall not be introduced into the POTW:
(1) Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the POTW or to the operation of the POTW. At no time, shall two successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system) be more than 5%, nor any single reading over 10%, of the lower explosive limit (LEL) of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides sulfides and, in no case, pollutants with a flashpoint of less than 140°F (60°C);
(2) Solid or viscous substances which may cause interference with the operation of the wastewater treatment facilities such as, but not limited to: animal guts or tissues, grease trap wastes, mudpit wastes, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, diapers, rags, spent grains, spent hops, waste paper, wood, plastics, gas, tar, asphalt residues, residues from refining, or processing of fuel or lubricating oil, mud or glass grinding or polishing wastes. Discharge of petroleum oil, non-biodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass-through is prohibited;
(3) Any wastewater having a pH less than 5.5 or greater than 11.0, or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment and/or personnel of the POTW;
(4) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals;
(5) Any noxious or malodorous liquids, gases, or solids which either singly or by interaction with other wastes are sufficient to create a public nuisance or hazard to life;
(6) Any substance, which may cause the POTW’s effluent, or any other product of the POTW such as residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case, shall a substance discharged to the POTW cause the POTW to be in non-compliance with sludge use or disposal criteria, guidelines or regulations developed under § 405 of the Act, being 33 USC 1345; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act being 42 USC 6901 et seq., the Clean Air Act being 42 USC 7401 et seq., the Toxic Substances Control Act being 15 USC 2601 et seq. or state criteria applicable to the sludge management method being used;
(7) Any substance which will cause the POTW to violate its NPDES and/or state disposal system permit or the receiving water quality standards;
(8) Any wastewater with objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions;
(9) Any wastewater having a temperature which will inhibit biological activity in the POTW treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW which exceeds 40°C (104°F);
(10) Any wastewater containing pollutants, including oxygen demanding pollutants (BOD and the like), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with either the POTW; or any wastewater treatment or sludge process, or which will constitute a hazard to humans;
(11) Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Director in compliance with applicable state or federal regulations;
(12) Any wastewater which causes a hazard to human life or creates a public nuisance;
(13) Any wastewater containing any medical or infectious wastes;
(14) Any trucked or handled pollutants, except at discharge points designated by the POTW Director in accordance with this chapter; or
(15) Any wastewater causing the treatment plant’s effluent to fail a toxicity test.
(2011 Code, § 24.1107)