(A)   No person shall discharge or cause to be discharged the following described substances, materials, waters or wastes if it appears likely in the opinion of the Superintendent that such wastes can harm either the sewers, sewage treatment process or equipment, have an adverse effect on the receiving stream, or can otherwise endanger life, limb, public property or constitute a nuisance. In forming his or her opinion as to the acceptability of these wastes, the Superintendent will give consideration to such factors as quantities of subject wastes in relation to flows, velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment facilities, degree of treatability of wastes and other pertinent factors.
   (B)   The substances prohibited are, but are not limited to:
      (1)   Any liquid or vapor having a temperature higher than 150°F or 65°C;
      (2)   Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l or containing substance which may solidify or become viscous at temperatures between 32°F and 150°F (0°C and 65°C);
      (3)   Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourth horsepower (0.76 HP metric) or greater shall be subject to the review and approval of the Superintendent;
      (4)   Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions whether neutralized or not;
      (5)   Any water or waste having a five-day BOD greater than 300 mg/l or containing more than 350 mg/l of suspended solids, except upon approval of the Superintendent in a written agreement;
      (6)   Any waters or wastes containing chromium, copper, zinc and similar objectionable or toxic substances; to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the Superintendent for such materials;
      (7)   Any waters or wastes containing phenols or other taste or odor producing substances, in such concentrations exceeding limits which may be established by the Superintendent as necessary, after treatment of the composite sewage to meet the requirements of the state, federal or other public agencies of jurisdiction for discharge to the receiving waters;
      (8)   Any discharge of phosphorus, ammonia nitrates, sugars or other nutrients or wastes containing them which in the opinion of the Superintendent, are in such quantities as to cause adverse effects or a significant load on the sewage treatment plant, or cause the stimulation of growths of algae, weeds and slimes which are or may become injurious to water supply, recreational use of water, fish, wildlife and other aquatic life, shall be limited to the extent necessary;
      (9)   Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the superintendent in compliance with applicable state or federal regulations;
      (10)   Any waters or wastes having a pH in excess of 9.5;
      (11)   Materials which exert or cause:
         (a)   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;
         (b)   Excessive discoloration such as, but not limited to, dye wastes, vegetable tanning solutions;
         (c)   Unusual chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works; and/or
         (d)   Unusual volume of flow or concentration of wastes constituting “slugs”, as defined herein.
      (12)   Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(Prior Code, § 2.103)  Penalty, see § 10.99