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USE OF PUBLIC SEWERS; DISCHARGES
(A) No person(s) shall discharge or cause to be discharged any unpolluted water such as storm water, ground water, roof runoff, surface drainage or noncontact cooling water to any sanitary sewer.
(B) Storm water and all other unpolluted drainage shall be discharged to those sewers as are specifically designed as storm sewers or to a natural outlet approved by the city and other regulatory agencies. Industrial cooling water of unpolluted process waters may be discharged to a storm sewer or natural outlet on approval of the city and upon approval and the issuance of a discharge permit by the MPCA.
(Ord. 408, passed 12-26-1989) Penalty, see § 53.999
No person(s) shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(A) Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the wastewater disposal system or to the operation of the system. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketone, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides;
(B) Solid or viscous substances which will cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities such as, but not limited to, grease, garbage with particles greater than one-half inch in any dimension, animal guts or tissues, pauch manure, bones, hair, hides or fleshing, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastic, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud or glass grinding or polishing wastes;
(C) Any wastewater having a pH of less than 5.0 or greater than 9.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the wastewater disposal system; and
(D) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to inhibit or disrupt any wastewater treatment process, constitute a hazard to humans or animals, or create a toxic effect in the receiving waters of the wastewater disposal system. A toxic pollutant shall include but not be limited to any pollutant identified pursuant to § 307(a) of the Act.
(Ord. 408, passed 12-26-1989) Penalty, see § 53.999
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