(A) Prohibited discharges.
(1) Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or waste to any public sewer:
(a) Any liquid or vapor having a temperature higher than 180°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, naptha, 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, feathers, tar, plastic, wood, paunch manure or any other solid or viscous substances capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works;
(f) Any waters or wastes having 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 treatment works;
(g) 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 treatment works;
(h) Any waters or wastes containing suspended or setteable solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant; and
(i) Any noxious or malodorous gas or substance capable of creating a public nuisance or hazard to life or of preventing entry into sewers for their maintenance and repair.
(2) In addition, all substances deemed toxic or hazardous in any concentration by the Administrator of U.S. EPA at present and in the future, pursuant to § 307(a) of the Clean Water Act, being 33 USC § 1317(a), shall be prohibited.
(B) Limited discharges.
(1) The following described substances, materials, waters, or waste shall be limited in discharges to the treatment works from all users to concentrations or quantities which will not harm either the treatment works or wastewater treatment process; will not have an adverse effect on the receiving stream; will not cause violations of the NPDES regulations; or will not otherwise endanger lives, limb, public property or constitute a nuisance. The Administrator may set limitations more severe than the limitations established in the regulations below, or in § 52.25(A), if in the Administrator’s opinion much more severe limitations are necessary to meet the above objectives. In forming this opinion as to the acceptability, the Administrator will give consideration to such factors as the quantity of subject waste in relation to flows and velocities in the sewers, materials of construction of the sewers, the wastewater treatment plant, degree of treatability of the waste in the wastewater treatment plant, and other pertinent factors.
(2) The limitations or restrictions on material or characteristics of waste or wastewaters discharged to the treatment works which shall not be violated without approval of the Administrator are as follows:
(a) Wastewater having a temperature higher than 150°F (65°C) at point of entrance to public sewer;
(b) Any garbage that has not been properly shredded;
(c) Any wastes containing iron, chromium, magnesium, copper, zinc and similar toxic wastes in concentrations which may interfere with the treatment works;
(d) Any waters or wastes containing odor-producing substances exceeding limits which may be established by the Administrator;
(e) Any waters or wastes containing more than 100 mg/l of either soluble fats, oil, emulsions or grease;
(f) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Administrator in compliance with applicable state or federal regulations;
(g) Quantities of flow, concentrations or both which constitute a “slug” as defined herein;
(h) Waters or wastes containing substances which:
1. Are not amenable to treatment or reduction by the wastewater treatment processes employed;
2. 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; or
3. Results in the discharge of substances promulgated by the Administrator of U.S. EPA pursuant to § 307(a) of the Clean Water Act to be toxic or hazardous.
(i) Any water or wastes which, by interaction with other water or wastes in the public sewer system, release obnoxious gases, form suspended solids which interfere with the public sewer or create a condition deleterious to the treatment works and treatment processes. The Administrator shall require all discharges to conform to all NPDES permit requirements and any other in specified state or federal regulations;
(j) Any water or waters which produce a color which could interfere with the treatment process, analytical tests or impart an unnatural color to the treatment plant’s effluent;
(k) Any substance which exerts a significant chlorine demand over a 30-minute test period. Limits of chlorine demand shall be as established by the Sanitary Engineer;
(l) Any water or wastes having an average 24 hour biochemical oxygen demand (BOD5) greater than 200 mg/l or a chemical oxygen demand (COD) greater than 500 mg/l. Either BOD or COD will be used, not both. The option shall be selected by the village;
(m) Any water or wastes containing more than 200 parts per million by weight of suspended solids; and
(n) Any average daily wastewater flow that represents 2% or more of the total wastewater flow at the treatment plant.
(3) If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in § 52.25(A) or (B) and which in the judgement of the Administrator may interfere with, pass through, or otherwise be incompatible with the treatment works, wastewater treatment processes or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Administrator 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) Charge for the additional cost incurred in treating or handling extra strength wastes or unusual discharges; and
(e) Contract for a special agreement or arrangement with any user whereby any waste of unusual strength or character may be accepted for treatment, subject to payment in proportion to cost incurred.
(C) Reserves the right. If the 24 hour sewage flow from a premises is determined by village to be greater than 2% of the total 24 hour sewage flow to village’s treatment plant, the village reserves the right to require the owner of the premises involved to install such storage, pumping facilities and other appurtenances as are required to control the quantity and rate of discharge of the sewage flow involved so as to not interfere with normal operation of village’s treatment plant. Such facilities shall be installed, owned, operated and maintained at owner’s expense.
(D) Inspection manhole to check the sewage discharge. The village reserves the right to require the property owner of the premises involved to install a suitable inspection manhole in the building sewer discharge line, so that observation, sampling, testing and measuring of the sewage discharge can be made by village. The inspection manhole shall conform to village’s specifications and shall be installed, owned and maintained at property owner’s expense. In the event that no inspection manhole has been installed, samples may be taken and tests may be made by the Superintendent at the nearest downstream manhole located beyond the point where the building sewer is connected.
(E) Destructive sewage discharge. As an emergency measure, in the event that the sewage discharge is destructive to village’s sewage treatment process or its sewer system, the Village Administrator is empowered to take immediate steps to stop such destruction by giving one hour notice to the consumer and shutting off the supply of all of the village water supply (except minimum water flow required for strictly sanitary purposes only) to the offending consumer until the condition is corrected.
(F) All measurements, tests and analysis. All measurements, tests and analysis of the characteristics of water and wastes to which reference is herein made, shall be determined in accordance with Standard Methods for the Examination of Water and Wastewater as published by the American Public Health Association and shall be determined at the inspection manhole previously specified. In the event that no such inspection manhole has been required, the nearest downstream manhole to which the building sewer is connected, shall be used to check the sewage discharge.
(G) Pretreatment of destructive sewage. In the event that the Village Administrator has determined that objectionable sewage waste of the foregoing character is being discharged into village’s sewer system, the consumer shall pretreat the sewage or take such other steps as may be necessary that will reduce the objectionable sewage characteristics or constituents, including rate of flow, to within the maximum limit herein specified. The plans, specifications and other pertinent information pertaining to such propose preliminary treatment shall be submitted to the Village Administrator for his or her written approval in advance of commencement of any construction work.
(H) Surcharge for destructive sewage.
(1) As an alternate to the consumer providing the necessary preliminary treatment so as to bring the characteristics of his or her sewage waste to acceptable limits and if such waste can be adequately handled by village’s system except for the abnormal treatment and processing expense, the Village Administrator may charge the offending consumer the rates and charges set forth in the applicable sewage rate schedule plus the following surcharges:
(a) One percent for each 5 ppm or fraction thereof that the BOD5 exceeds 200 ppm. 0.4% for each 5 ppm or fraction thereof that the COD exceeds 500 ppm;
(b) Six-tenths percent for each 5 ppm or fraction thereof by weight that suspended solids exceeds 200 ppm; and
(c) Twenty-five percent whenever the hydrogen ion concentration of industrial wastes as measured by the pH value is less than 5.5 or greater than 9.0.
(2) Said surcharges shall continue until proper corrective measures have been made by the property owner and same are in continuous operation.
(I) Oil and grease sewage requirements. Where liquid fuels, lubricating oils and grease; and also sand are handled in bulk or in package form and automobiles, trucks, tractors and other internal combustion equipment is serviced on the premises (including car and equipment washers), it shall be mandatory that the property owner install at his or her expense a suitable grease, oil and sand interceptor or separator so as to prevent the discharge of such waste into village’s sewer system. All interceptors shall be of a type and capacity approved by the Administrator and shall be located as to be readily and easily accessible for cleaning; also inspection by the Superintendent. They 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 removal covers which when bolted in place shall be gastight and watertight. All grease, oil and sand interceptors shall be installed, owned and maintained by the property owner at his or her expense and shall be maintained and kept in continuously efficient operation at all times.
(J) Inspection of premises to check sewage discharge. The Superintendent or other authorized village employees shall be permitted to enter upon all properties for the purposes of inspection, observation, measurement, sampling and testing of sewage discharges into village sewers, including the use of standard dye and/or smoke testing methods to determine the source and flow of sewage being discharged into village’s sewer system.
(K) Individual industrial users shall pay all service and investment costs involved. The sewage waste from all industrial users shall be periodically tested and analyzed by the village to determine the treatment and the resultant operation, maintenance, investment and replacement costs required to treat such sewage waste so that the effluent discharged from village’s sewage treatment plant conforms to the Federal Environmental Protection Agency standards (EPA). To the extent that such determined costs exceed those required to treat segregated domestic wastes or wastes from sanitary conveniences, such increased costs shall be added to village’s basic rate and charges set forth in its individual Sewage Service Schedule No. 2 “CSS” and the industrial user involved shall be billed and charged accordingly.
(Ord. 852-83, passed 2-7-1983) Penalty, see § 52.99