(a) No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooking water, or unpolluted industrial process waters to any sanitary sewer.
(Ord. 90-05. Passed 2-22-90.)
(b) Storm water and other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers or to a natural outlet approved by the City Manager. Industrial cooling water or unpolluted process waters may be discharged, on approval of the City Manager, to a storm sewer, or a natural outlet.
(Ord. 91-30. Passed 12-2-91.)
(c) No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(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 solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes to insure or interfere with any sewage treatment process constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant;
(3) Any waters or wastes having a pH lower than 5.5 or having any corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works;
(4) 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 works 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 fleshing, entrails, and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
(d) (1) If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain substances or possess characteristics which in the judgment of the City Manager may have a deleterious effect upon the sewage works, processes, equipment, or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the City Manager may:
A. Reject the wastes;
B. Require pretreatment to an acceptable condition for discharge 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 wastes not covered by existing taxes or sewer charges under the provisions of subsection (g) hereof.
(2) If the City Manager 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 City Manager, and subject to the requirements of all applicable codes, ordinances and laws.
(e) Grease, oil and sand interceptors shall be provided when, in the opinion of the City Manager they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand, or other harmful ingredients; except that such interceptors shall not be required for single dwelling residential homes. All interceptors shall be of a type and capacity approved by the City Manager, and shall be located as to be readily and easily accessible for cleaning and inspection.
(f) Where preliminary treatment of flow-equalizing facilities are provided, for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.
(g) No statement contained in this article shall be construed as preventing any special agreement or arrangement between the City and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the City for treatment, subject to payment therefor, by the industrial concern.
(Ord. 90-05. Passed 2-22-90.)