11.201 Prohibited Discharge Standards.
(1) General Prohibitions. Except as hereinafter provided, no user shall discharge any wastewater containing pollutants in sufficient quantity (flow or concentration), either singly or by interaction with other pollutants, to pass through or interfere with the POTW; to injure or interfere with any wastewater treatment process; to interfere with the use of or disposal of treatment plant sludge; to constitute a hazard to humans or animals; to create a toxic effect in the receiving waters of the sewer system; to exceed the limitation set forth in a national pretreatment standard; or to exceed a local limit established by the WRD Manager. These general prohibitions apply to all users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, State, or local pretreatment standards or requirements.
(2) Specific Prohibitions. No user shall introduce or cause to be introduced into the POTW the following pollutants, substances, or wastewater:
(a) Any pollutant which may, by themselves or by interaction with other substances, create a fire or explosion hazard, or be injurious in any other way to the sewer system. Included in this prohibition are wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees centigrade using the test methods specified in 40 CFR Part 261.21.
(b) Any wastes, wastewaters or substances having a pH less than 5.0 or greater than or equal to 12.5, or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the sewer system.
(c) Solid or viscous substances in quantities or of a size capable of causing obstruction to the flow in the POTW or other interference with the operation of the POTW. Such substances include, but are not limited to: fats, grease, oil (whether or not emulsified), garbage, mud, sand, spent grains, spent hops, wood, metal, shavings, stone or marble dust, glass or solids with particles greater than one-quarter inch in any dimension.
(d) Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a discharge at a flow rate and/or pollution concentration, which either singly or by interaction with other pollutants may cause interference with the POTW.
(e) Any wastewater having a temperature which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the collection system to be greater than 140 degrees Fahrenheit, or which will cause the wastewater treatment plant influent to exceed 104 degrees Fahrenheit. The WRD Manager may require thermal loading reduction from industrial users with the potential for thermal impact on the sanitary sewer system.
(f) Any pollutant that results in the presence of toxic gases, vapors or fumes within the sewer system in a quantity that may cause worker health and safety problems.
(g) Any waters or wastes containing sludges or screenings from tank bottom contents, industrial sump bottom contents, grease or oil trap wastes, plating or metal finishing wastes.
(h) Any noxious or malodorous liquids, gases, solids, or other wastewaters, which either singly or by interaction with other wastes are sufficient to create a public nuisance or hazard to life, or are sufficient to prevent entry into the sewers for maintenance and repair.
(i) Any fat, oils or greases, including but not limited to petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that may cause interference or pass through.
(j) Any substance that may cause the treatment plant effluent or any other residues, sludges, or scum to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the sewer system cause the Regional Water Reclamation Facility to be in noncompliance with sludge use or disposal regulations, or permits issued under Section 405 of the Act, the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, or other State requirements applicable to the sludge use and disposal practices being used by the Regional Water Reclamation Facility.
(k) Any wastewater containing any radioactive waste or isotopes except as specifically approved by the WRD Manager in compliance with applicable State or Federal regulations.
(l) Materials which exert or cause:
(i) Unusual concentrations of inert suspended solids (such as, but not limited to, fuller’s earth, lime slurries, and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate).
(ii) Unusual chlorine demand or concentrations in such quantities as to constitute a significant load on the treatment plant, or that violate worker health and safety limits.
(m) Any trucked or hauled pollutants, including holding tank wastes, except at discharge points designated by the WRD Manager.
(n) Any medical wastes including, but not limited to, recognizable portions of the human or animal anatomy.
(o) Any wastes containing detergents, surface-active agents, or other substances that may cause excessive foaming in the POTW.
(p) Storm water, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, cooling water and unpolluted industrial wastewater, unless specifically authorized by the WRD Manager.
(q) Any material identified as hazardous waste according to 40 CFR Part 261.
(r) Wastewater causing two readings on an explosion hazard meter at the point of discharge into the POTW, or at any point in the POTW, of more than five percent or any single reading over 10 percent of the lower explosive limit of the meter.
(s) Any substance with objectionable color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions.
Pollutants, substances or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW.