(A) Customer compliance with rules.
(1) No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water, or unpolluted industrial process waters to any sanitary sewer.
(2) Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as combined sewers or storm sewers or to a natural outlet approved by the Superintendent. Industrial cooling water or unpolluted process waters may be discharged, upon approval of the Superintendent, to a storm sewer, combined sewer, or natural outlet.
(3) Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any municipal sewer:
(a) Any liquid or vapor having a temperature higher than 150°F;
(b) Any water or waste which may contain more than 100 parts per million, by weight, of fat, oil, or grease;
(c) Any gasoline, benzine, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
(d) Any garbage that has not been properly shredded;
(e) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, leathers, tar, plastics, wood, paunch, manure, or any other solid of viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage system;
(f) 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;
(g) 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;
(h) Any noxious or malodorous gas or substance capable of creating a public nuisance;
(i) Any waters or wastes containing iron, chromium, copper, zinc, and similar objectionable or toxic substances to such degree that any such material received in the composite wastewater at the wastewater treatment works exceeds the limits established by the Public Works Director for such materials;
(j) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Director of Public Works in compliance with applicable state or federal regulations;
(k) Waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed or are amenable to treatment only to such degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters; and
(l) Waters or wastes that are corrosive or that have a pH lower than five.
(4) Grease, oil, and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of the liquid wastes containing grease in excessive amounts or any inflammable wastes, sand, and other harmful ingredients; except, 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 and shall be located as to be readily and easily accessible for cleaning and inspection. 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, watertight, and equipped with easily removable covers which when bolted in place shall be gas-tight and watertight.
(5) Where installed, all grease, oil, and sand interceptors shall be maintained by the owner, at his or her expense, in continuously efficient operation at all times.
(6) Failure by the owner to properly clean and maintain interceptors shall be considered sufficient cause for the Director to disconnect the industrial user from the wastewater facilities or to direct that the industrial user discontinue discharging to the wastewater facilities or for punitive actions as provided for in this chapter.
(Prior Code, § 13.16.050)
(B) Discharge of waste into public sewers.
(1) If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain objectionable or abnormal characteristics enumerated in division (A)(3) above and which, in the judgment of the Public Works Director, may have a deleterious effect upon the wastewater facilities, processes, equipment, or receiving waters otherwise create a hazard to life or constitute a public nuisance, the Public Works Director may, with the City Engineer:
(a) Reject the wastes;
(b) Require pretreatment to an acceptable condition for discharging to the public sewers;
(c) Require control over the quantities and rates of discharge; and/or
(d) Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of this chapter.
(2) The City Council may negotiate on any upgrades that the City Engineer recommends.
(Prior Code, § 13.16.060)
(Ord. 90-2, passed - -; Ord. 06-10, passed - -; Ord. 10-8, passed 9-9-2010)