(A)   It is unlawful and an offense for any person to connect or cause to be connected the downspout or conduits draining storm or rain water from the roofs, premises or other places or buildings, or uncontaminated cooling water or unpolluted industrial process water into any of the lateral or main sanitary sewers of the city, or to in any manner conduct or cause to be conducted any uncontaminated cooling or unpolluted process water, storm water, surface or subsurface water, or rain water whatsoever into such sanitary sewers.
   (B)   No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sanitary sewer:
      (1)   Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
      (2)   Any waters or wastes containing, toxic or poisonous singly or by interaction with other wastes, or injure or interfere with any sewage treatment process, constitute a hazard to humans animals, create a public nuisance, or create any hazard in the receiving water of the sewage treatment plant, including but not limited to cyanides in excess of two mg/l as CN in the wastes as discharged to the public sewer;
      (3)   Any waters or wastes having pH lower than 6.0 or greater than 10.5 or having any other chemical or corrosive property which are hazardous or capable of causing damage to structures, equipment and personnel of the sewage works; or
      (4)   Solids or viscous substances in quantities or of sizes (will not pass through a one-fourth inch screen) capable of causing obstruction to flow in sewers or other interference with the proper operation of the sewage works, storm sewers, or natural outlets such as, but not limited to ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, or vegetable oil, tar, plastics, wood, rubber, un-ground garbage, animal grease or oil and by-product, whole blood, paunch manure, hair, meat fleshing, entrails, bones, toe nails, bristles, horns, hooves, chicken feet or heads, yeast, spent grain, hops, whey, whole or separated milk, paper dishes, cups, or milk containers, either whole or ground by garbage grinders.
   (C)   No person may discharge to public sanitary sewers any waste which by itself or by interaction with other wastes may:
      (1)   Injure or interfere with wastewater treatment processes or facilities;
      (2)   Constitute a hazard to humans or animals; or
      (3)   Create a hazard in receiving waters of the wastewater treatment plant effluent.
   (D)   All discharges shall be prohibited except those that meet the criteria for “domestic wastewater.” BOD concentration shall not exceed 250 mg/l.
   (E)   All industrial discharges are prohibited unless in compliance with federal, state, and local requirements and regulations.
   (F)   At the present time, industrial users contribute 4% of the total flow in the city sewer system. If an industrial user should desire to locate in the city and make use of the sewer system, an industrial cost recovery system will be initiated in accordance with EPA and state regulations at that time to compensate for his or her use for the system.
   (G)   Any new connections from the inflow sources into the sanitary sewer portions of the sewer system shall be prohibited.
(Prior Code, § 54.041) (Ord. 1537, passed 4-10-2007) Penalty, see § 10.99