(A)   No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:
      (1)   Any stormwater, surface water, ground water, roof runoff, exterior or interior foundation drainage or subsurface drainage, to any sanitary sewer. Uncontaminated cooling water and unpolluted industrial process waters may be discharged to a sanitary sewer only if expressly authorized by the Utilities Superintendent;
      (2)   Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
      (3)   Any waters or wastes containing toxic or poisonous solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any waste treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the wastewater treatment plant;
      (4)   Any waters or wastes having a pH lower than 5.5, or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works;
      (5)   Solid or 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 facilities such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers, and the like, either whole or ground by garbage grinders; and/or
      (6)   Any waters or wastes having:
         (a)   A five-day BOD greater than 200 parts per million by weight;
         (b)   Containing more than 200 parts per million by weight of suspended solids; or
         (c)   Having an average daily flow greater than 2% of the average sewage flow of the city, shall be subject to the review of the Superintendent.
   (B)   Where necessary in the opinion of the Utilities Superintendent, the owner shall provide, at his or her expense, the preliminary treatment as may be necessary to:
      (1)   Reduce the biochemical oxygen demand to 200 parts per million by weight;
      (2)   Reduce the suspended solids to 200 parts per million by weight; or
      (3)   Control the quantities and rates of discharge of the waters or wastes.
   (C)   Plans, specifications, and other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the Superintendent and no construction of the facilities shall be commenced until the approvals are obtained in writing.
(1972 Code, § 3-531) (Ord. 640, passed 5-20-1980) Penalty, see § 50.99