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USE OF PUBLIC SEWERS
No person shall discharge, or cause to be discharged, any storm water, surface water, groundwater, subsurface drainage, or polluted industrial process waters to any sanitary sewer.
(Prior Code, § 52.065) Penalty, see § 51.999
Storm waters and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers, or to an natural outlet approved by the Superintendent, or other officer appointed for such purpose. Industrial cooling water or unpolluted process may be discharged, upon approval of the Superintendent, or other officer or employee of the city appointed for such purpose, to a storm sewer or natural outlet.
(Prior Code, § 52.066) Penalty, see § 51.999
(A) Except as hereinafter provided, no person shall discharge, or cause to be discharged, any of the following described waters or wastes to any public sewer:
(1) Any liquid or vapor having a temperature higher than 150°F;
(2) Any water or waste which may contain more than 100 parts per million by weight of fat, oil, or grease;
(3) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
(4) Any garbage that has not been properly shredded;
(5) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastic, wood, paunch manure, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works;
(6) Any waters or wastes having a pH lower than 5.5 or higher than 9.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works;
(7) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create any hazard in the receiving waters of the sewage treatment plant;
(8) Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant;
(9) Any noxious or malodorous gas or substance capable of creating a public nuisance;
(10) 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;
(11) Any waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable to treatment plant effluent, cannot meet the requirements of other agencies having jurisdiction over discharge of the receiving waters. Each user, which discharges any toxic pollutants which causes an increase in the cost of treating the effluent or the sludge of the city wastewater treatment facility, shall pay for such increased costs; or
(12) Any waters or wastes which, by interaction with other waters or wastes in the public sewer system, release obnoxious gases, form suspended solids which interfere with the collection process, or create a condition deleterious to structures and treatment processes.
(B) If any waters or wastes are discharged, or are proposed to be discharged, to the public sewers, which waters contain substances or possess the characteristics enumerated above, and which in the judgment of the Superintendent may have a deleterious effect upon the wastewater facilities, process, equipment, or receiving water, or which create a hazard to life or constitute a public nuisance, the Superintendent may:
(1) Reject the wastes;
(2) Require pretreatment to an acceptable condition for discharge to the public sewers;
(3) Require control over the quantities and rates of discharge; and/or
(4) Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges.
(C) If the Superintendent permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the Superintendent and the State Department of Water and Natural Resources.
(Prior Code, § 52.067) Penalty, see § 51.999
(A) Grease, oil, and sand interceptors shall be provided when, in the opinion of the Superintendent, or other officer or employee appointed for such purpose, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand, and other harmful ingredients; except that such interceptors shall not be required for private living quarters, or dwelling units. All interceptors shall be of a type and capacity approved by the Superintendent, or other officer or employee of the city appointed for such purpose, and shall be located as to be readily and easily accessible for cleaning and inspection.
(B) Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, water-tight, and equipped with easily removable covers which, when bolted in place, shall be gas-tight and water-tight. (Prior Code, § 52.068)
(A) The admission into the public sewers of any waters or wastes having any of the following shall be subject to the approval of the Superintendent, or other officer or employee of the city appointed for such purpose:
(1) A five-day biochemical oxygen demand greater than 250 parts per million by weight;
(2) Containing more than 300 parts per million by weight of suspended solids; or
(3) Containing any quantity of substances having the characteristics described in § 51.067.
(B) The owner shall provide, at his or her expense, such preliminary treatment as may be necessary to:
(1) Reduce the biochemical oxygen demand to 250 parts per million and the suspended solids to 300 parts per million by weight;
(2) Reduce objectionable characteristics or constituents to within the maximum limits provided for in § 51.067; or
(3) Control the quantities and rates of discharge of such waters or wastes.
(C) Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the Superintendent, or other officer or employee of the city appointed for such purpose, and of the Director of Sanitation of the state, and no construction of such facilities shall be commenced until said approvals are obtained in writing. The city shall have the authority to request samples and analysis to verify the BOD and TSS levels, with all testing to be at the cost of the owner.
(Prior Code, § 52.070)
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