(A)
No person shall discharge, or cause to be discharged, any stormwater, surface water, ground-water roof runoff, subsurface drainage, uncon-taminated cooling water, or unpolluted industrial process waters to any sanitary sewer. No person shall use, operate or maintain a sump pump which discharges unpolluted subsurface drainage to any sanitary sewer.
(B) 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 Commissioner of Public Works. Industrial cooling water or unpolluted process waters may be dis-charged on approval of the Commissioner of Public Works, to a storm sewer, combined sewer, or natural outlet.
(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 injure 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 other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works.
(4) Solid or viscous substances in quan- tities 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 fleshings, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
(D) No person shall discharge or cause to be discharged the following prescribed substances, materials, water or waste if it appear likely, in the opinion of the Commissioner of Public Works, that the waste can harm either the sewers, sewage treatment process or equipment, have an adverse effect on the receiving stream or otherwise can endanger life, limb, public property or constitute a nuisance. In forming an opinion as to the accept-ability of theses waste, the Commissioner of Public Works will give consideration to factors such as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant and maximum limits established by regulatory agencies. The substances prohibited are:
(1) Any liquid or vapor having a tempera- ture higher than 150° F.
(2) Any waters or wastes containing toxic or poisonous materials or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32° F and 150°F.
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of ¾ horsepower or greater shall be subject to the review and approval of the Commissioner of Public Works.
(4) Any waters or wastes containing strong acid, iron pickling wastes or concentrated plating solution, whether neutralized or not.
(5) Any waters or wastes containing iron, chromium, copper, zinc or similar objectionable or toxic substances or wastes exerting an excessive chlorine requirement, to the degree that such material received in the composite sewage at the sewage treatment works exceeds the limits established by the Commissioner of Public Works for those materials.
(6) Any waters or wastes containing phenols or other taste- or odor-producing substances, in concentrations exceeding limits which may be established by the Commissioner of Public Works as necessary after treatment of the composite sewage, to meet the requirements of the state, federal or other public agencies of jurisdiction for the discharge to the receiving waters.
(7) Any radioactive wastes or isotopes of the half-life or concentration that may exceed limits established by the Commissioner of Public Works in compliance with applicable state or federal regulations.
(8) Any wastes or waters having a pH in excess of 9.5.
(9) Any mercury or any of its compounds in excess of 0.0005 mg/l as Hg at any time, except as permitted by the Commissioner of Public Works in compliance with applicable state and federal regulations.
(10) Materials which exert or cause:
(a) Unusual concentrations of inert suspended solids (such as, but not limited to, Fullers earth, lime slurries and lime residue) or of dissolved solids (such as, but not limited to) sodium chloride and sodium sulfate.
(b) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions).
(c) Unusual BOD, chemical oxygen demand or chlorine requirements in quantities as to constitute a significant load on the sewage treatment works.
(d) Unusual volume of flow or con- centrations of wastes constituting slugs.
(11) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed or are
amenable to treatment only to the degree that the sewage treatment plant effluent cannot meet the requirements of agencies having jurisdiction over discharge to the receiving waters.
(E) (1) If any waters or wastes are discharged or are proposed to be discharged to the public sewers, the waters contain the substances or possess the characteristics enumerated in division (D) above, and/or which are in violation of the standards of pretreatment provided in 40 CFR 403, June 26, 1978 and any amendments thereto, and which, in the judgement of the Commissioner of Public Works 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 Commissioner of Public Works 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.
(d) Require payment to cover the added costs of handling and treating the wastes not covered by existing taxes or sewer charges, under the provisions of division (K) below.
(2) If the Commissioner of Public Works 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 Commissioner and subject to the requirements of all applicable codes, ordinance and laws.
(F) Grease, oil and sand interceptors shall be provided when, in the opinion of the Commissioner, 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 the interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the Commissioner and shall be located as to be readily and easily accessible for cleaning and inspection.
(G) Where preliminary treatment or flow- equalizing facilities are provided, they shall be maintained continuously in satisfactory and effective operation by the owner, at the owner’s expense.
(H) Each industry shall be required to install a control manhole and, when required by the Commissioner, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole, together with the necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastes. The manhole, when required, shall be accessibly and safely located and shall be constructed in accordance with plans approved by the Commissioner. The manhole shall be installed by the owner, at the owner’s expense and shall be maintained by the owner so as to be safe and accessible at all times.
(I) (1) The owner of any property serviced by a building sewer carrying industrial wastes shall provide laboratory measurements, tests and analyses of waters and waste to illustrate compliance with this chapter and any special conditions for discharge established by the city or regulatory agencies having jurisdiction over the discharge.
(2) The number, type and frequency of laboratory analyses to be performed by the owner shall be as stipulated by the city, but no less than once per year the industry must supply a complete analyses of the constituents of he wastewater discharge to assure compliance with the federal, state and local standards are being met.
(3) The owner shall report the results of measurements and laboratory analyses to the city at the times and in the manner as prescribed by the city.
(4) The owner shall bear the expense of all measurements, analyses and reporting required by the city.
(5) At times deemed necessary the city reserves the right to take measurements and samples for analysis by an outside laboratory service.
(J) All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in this chapter shall be determined in accordance with the latest edition of IEPA Division of Laboratories Manual of Laboratory Methods and shall be determined at the control manhole provided, or upon suitable samples taken at the control manhole.
(1) In the event no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected.
(2) Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property.
(3) The particular analyses involved will determine whether a 24-hour composite of all outfalls of a premise is appropriate or whether a grab sample should be taken. Normally, but not always, BOD and suspended solids analyses are obtained from 24-hour composites of all outfalls, whereas pH is determined from periodic grab samples.
(K) No statement contained in this section 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, provided the payments are in accordance with federal and state guidelines for the user charge system.
(Ord. 0-89-8, passed 6-5-89; Am. Ord. O-2018-07, passed 3-12-18)
Penalty, see § 53.99