§ 51.31 PROHIBITED DISCHARGES.
   Except as hereinafter provided, no person shall discharge or cause to be discharged into the public sewer or natural outlet any of the following.
   (A)   Any gasoline, kerosene, alcohol, formaldehyde, disinfectants, benzene, naphtha, fuel oil, or any flammable or explosive liquid solid or gas.
   (B)   Any waters or wastes containing toxic, poisonous, or radioactive solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant. Material, such as copper, zinc, chromium, and similar toxic substances, shall not be allowed in soluble form or in suspended solid form in concentration higher than those achieved in appropriate pretreatment facilities approved by the Engineer and the Commissioner of Environmental Protection.
   (C)   Any sewage having a pH lower than 5.5 or higher than 9.00, and having any other corrosive property capable of causing damage or hazard to the public sewer or its personnel.
   (D)   Solid and viscous substances in quantities, or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works, such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, paint, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails, and paper dishes, cups, milk containers, and so forth, either whole or ground by garbage grinders.
   (E)   Any liquid or vapor having a temperature higher than 120°F. (49°C.) except by written approval of the Engineer. In such cases, the Engineer may require installation, by the industry, of an approved temperature recorder in the receiving sewer.
   (F)   Any water or waste containing fats, wax, grease, or oils in excess of 50 mg/l for emulsified material and 15 mg/l for free floating material, or containing substances which may solidify or become viscous at temperatures between 32°F. and 150°F. (0° and 65°C.)
   (G)   Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower or greater shall be subject to the review and approval of the Engineer.
   (H)   Any sewage containing suspended solids in excess of 350 parts per million by weight or having a B.O.D. in excess of 300 parts per million by weight.
   (I)   Any waters or wastes containing phenols or other taste or odor producing substances in such concentrations exceeding limits which may be established by the Engineer as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal, or other public agencies of jurisdiction for such discharge to the receiving waters.
   (J)   Materials which exert or cause:
      (1)   Unusual concentrations of inert suspended solids, such as, but not limited to, fullers earth, lime slurries, and lime residues or of dissolved solids, such as, but not limited to, sodium chloride and sodium sulfate.
      (2)   Excessive discoloration, such as, but not limited to, dye wastes and vegetable tanning solutions.
      (3)   Unusual B.O.D., chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works.
      (4)   Unusual volume of flow or concentration of wastes constituting "slugs" as defined in § 51.02.
      (5)   High hydrogen sulfide content.
   (K)   Any substance which is not amenable to treatment or reduction by the wastewater treatment process employed, or is amenable to treatment only to such degree that the wastewater treatment plant cannot meet the requirement of other agencies having jurisdiction over discharge to the receiving waters without first pretreating to a concentration acceptable to the town.
   (L)   Any overflow or drainage from cesspools or other receptacles storing or constructed to store organic wastes.
   (M)   Cyanides or cyanogen compounds capable of liberating hydrocyanic gas or acidification in excess of one mg/l as CN in the wastes from any outlet into the public sewers.
   (N)   Radioactive materials exceeding the existing standards of the State, Department of Environmental Protection, or the United States Environmental Protection Agency.
   (O)   Any wastewaters containing phenols or other taste producing substances in such concentrations as to produce odor or taste in the effluent as to affect the taste and odor of the receiving waters.
(Ord. 235, adopted 9-4-84) Penalty, see § 51.99