(A)   No person shall discharge or cause to be discharged any storm water, foundation drainwater, groundwater, roof runoff, surface drainage, cooling waters, or any other unpolluted water to any sanitary sewer.
   (B)   No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with the operation or performance of the POTW or pass through the POTW. The following general prohibitions shall apply to all such users of the sanitary sewers whether or not the user is subject to National Categorical Pretreatment Standards or any other national, state, or local pretreatment standards or requirements. A user may not contribute the following substances to the sanitary sewers:
      (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 or hazardous in any other way to the POTW or sanitary sewers or to the operation of the POTW or sanitary sewers.
         (a)   Pollutants which create a fire or explosion hazard in the POTW or sanitary sewers, including, but not limited to, wastestreams with a closed-cup flashpoint of less than 140°F (60°C) using the test method specified in 40 CFR 261.21.
         (b)   Wastewater causing two readings on an explosion hazard meter at the point of discharge into the POTW or sanitary sewers, or at any point in the POTW or sanitary sewers, of more than 5% or any single reading over 10% of the lower explosive limit (LEL) of the meter.
      (2)   Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the POTW such as, but not limited to: grease, garbage with particles greater than one-half inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastics, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or grass grinding or polishing wastes or tumbling or de-burring stones.
      (3)   Any wastewater having a pH less than 5.0 or more than 12.5, or otherwise causing corrosive structural damage or hazard to the sanitary sewers or POTW equipment, and/or personnel of the POTW.
      (4)   Any wastewater containing incompatible 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, create an incompatible effect in the receiving waters of the POTW, or to exceed the limitation set forth in a national categorical pretreatment standard (when effective), or to exceed a limitation set forth in § 55.013, or to create a public nuisance. An incompatible pollutant shall include but not be limited to any pollutant identified pursuant to Section 307(a) of the Act.
      (5)   Any noxious or malodorous liquids, gases, or solids which either singly or by interaction with other wastewater are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for their maintenance and repair.
      (6)   In no case shall a substance discharged to the POTW cause the city to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; any criteria guidelines affecting sludge use or disposal developed pursuant to the RCRA, SWDA, the Clean Water Act, the Toxic Substances Control Act, or state criteria applicable to the sludge management method being used.
      (7)   Any substance which will cause the city to violate its NPDES permit or the receiving water quality standards.
      (8)   Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the treatment plant's effluent, thereby violating the city's NPDES permit.
      (9)   Any wastewater which singly or by interaction with other wastes produces a residual temperature at the introduction into the POTW in excess of 40°C (104°F) or which will inhibit biological activity in the POTW resulting in interference. In any case, an industrial user will limit the temperature of its discharge to a maximum of 65°C (149°F).
      (10)   Any pollutants, including compatible pollutants released at a flow rate and/or pollutant concentration which a user knows or has reason to know will cause interference to the POTW. In no case shall slug loads be discharged.
      (11)   Any wastewater containing BOD, total solids, or suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the POTW or will cause interference with the POTW; provided however, that a user may be permitted by specific, written agreement with the Lockport Sanitary Sewer Department, which agreement to discharge such BOD or TSS may provide for special charges, payments or provisions for treating and testing equipment.
      (12)   Any wastewaters containing excessive amounts of fat, wax, grease or oils, whether emulsified or not; or containing substances which may solidify or become discernibly viscous at temperatures between 32°F (0°C) and 149°F (65°C) unless specifically permitted otherwise.
         (a)   Petroleum oil, nonbiodegradeable cutting oil or products of mineral oil origin, in amounts that will cause interference or pass through.
      (13)   Wastewater containing inert suspended solids (such as, but not limited to, Fuller earth, lime slurries, and lime residues) or dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate) in such quantities that they would cause interference to the sanitary sewers or POTW.
      (14)   Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by state or federal regulations.
      (15)   Any discharge exceeding the Standards established in 35 Illinois Administrative Code 307.
      (16)   Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems.
      (17)   Trucked or hauled pollutants, except at discharge points designated by the Superintendent in accordance with the EPA regulations.
      (18)   Sludge, screenings, or other residues from the pretreatment of industrial wastes.
      (19)   Medical wastes, except as specifically authorized by the Superintendent in a wastewater discharge permit.
      (20)   Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
      (21)   Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW.
      (22)   Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water and unpolluted wastewater, unless specifically authorized by the Superintendent.
      (23)   Pollutants, including oxygen-demanding pollutants (BOD, etc.) released in a discharge at a flow and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the POTW. 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.
   (C)   When the Superintendent determines that a user is contributing to the POTW, any of the above enumerated substances in such amounts as to interfere with the operation of the POTW or pass through the POTW, the Superintendent has the authority to utilize enforcement procedures as defined in §§ 55.050 through 55.063.
(Ord. 16-005, passed 5-18-16)