(A) No person shall discharge, or cause to be discharged, the following described substances, materials, waters or wastes if it appears likely in the opinion of the village that these wastes can harm either the sewers, sewage treatment process or equipment; have an adverse effect on the receiving stream; or can otherwise endanger life, limb, public property or constitute a nuisance. In forming his or her opinion as to the acceptability of these wastes, the village will give consideration to the factors 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, and maximum limits established by regulatory agencies.
(B) The substances prohibited are:
(1) Any liquid or vapor having a temperature 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 (0°C and 65°C);
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the village;
(4) Any waters or wastes containing strong acid, iron pickling wastes or concentrated plating solutions whether neutralized or not;
(5) Any waters or wastes having a pH in excess of 9.5;
(6) Any mercury or any of its compounds in excess of 0.0005 mg/l as Hg at any time in compliance with applicable state and federal regulations;
(7) Any cyanide in excess of 0.025 mg/l at any time in compliance with applicable state and federal regulations;
(8) Materials which exert or cause:
(a) Unusual concentrations of inert suspended solids (such as, but not limited to, fullers earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfite);
(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; and
(d) Unusual volume of flow or concentrations of wastes constituting slugs.
(9) 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 a degree that the sewage treatment plant effluent cannot meet the requirements of agencies having jurisdiction over discharge to the receiving waters; and
(10) Water or wastes which are prohibited by any regulations of the Metropolitan Sanitary District of Greater Chicago.
(C) (1) 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 subsection (B) above, and/or which are in violation of the standards for pretreatment provided in Chapter 1, EPA Rules and Regulations, subchapter D, Water Programs Part 128 - Pretreatment Standards Federal Register Volume 38, No. 215, Thursday, November 8, 1973 and any amendments thereto, and which in the judgment of the village may have a deleterious effect upon the sewage works, process, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the village 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 costs of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of § § 52.063.
(2) If the village 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 village, and subject to the requirements of all applicable codes, ordinances and laws.
(Ord. 703, passed 10-10-1983)