(a)   Any waters or wastes which are discharged or are proposed to be discharged which contain compatible or incompatible pollutants other than sanitary sewage and which may have a deleterious effect upon the sewage disposal system, processes, equipment or receiving waters, including violation of applicable water quality standards, or which otherwise create a hazard to life or constitute a public nuisance, the Director shall:
      (1)   After informal notice to the discharger, immediately and effectively halt or prevent the discharge of such wastes; or
      (2)   Require pretreatment of quantities and rates of discharge to an acceptable condition for discharge to the public sewers; and/or
      (3)   Require payment to cover the added cost of handling, treating and disposing of the wastes in accordance with Section 924.07.
   (b)   Provided however, no person, firm or corporation shall contribute, discharge or cause to be discharged, directly or indirectly any of the following described substances into the City sewage disposal system:
      (1)   Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction to cause fire or explosion or be injurious in any other way to persons or the operation of the sewage disposal system.
      (2)   Solid or viscous substances which will or may cause obstruction to the flow in a sewer or other interferences with the operation of the system.
      (3)   Any wastewater having a pH less than 6.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the system.
      (4)   Any wastewater containing toxic pollutants in sufficient quantity, which act either singly or by interaction to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, or which exceeds the limitations set forth in Categorical Pretreatment Standards.
      (5)   Any noxious or malodorous liquids, gases or solids which either singly or by interaction are capable of creating a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for their maintenance and repair.
      (6)   Any substance which may cause the WWTP's effluent or treatment 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 sewer disposal system cause noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, or State standards applicable to the sludge management method being used.
      (7)   Any substance which will cause the WWTP to violate its NPDES and/or other disposal system permits.
      (8)   Any substance 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 WWTP resulting in interference; but in no case, wastewater with a temperature at the introduction into the sewage disposal system which exceeds forty degrees C (104oF).
      (10)   Any slug as defined in Section 925.01(47).
         (Ord. 09-62-12. Passed 9-4-12.)
      (11)   Any unpolluted water including, but not limited to noncontact cooling water.
      (12)   Any wastewater containing any radioisotopes of such half life or concentration as exceed limits established by the City in compliance with applicable State or Federal regulations.
      (13)   Any wastewater which causes hazard to human life or creates a public nuisance.
         (Ord. 19-90. Passed 2-20-90.)