A. No person shall discharge or cause to be discharged any storm water, surface water, groundwater, roof runoff, subsurface drainage, cooling water or unpolluted industrial process waters to any sanitary sewer.
B. Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:
1. Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit;
2. Any water or waste which may contain more than one hundred parts per million, by weight, of fat, oil, or grease;
3. Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas;
4. Any garbage that has not been properly shredded;
5. Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works;
6. Any waters or wastes having a pH lower than 6.5 or higher than 8.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works;
7. 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;
8. 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;
9. Any noxious or malodorous gas, metal, chemical or other substance containing a higher amount of milligrams per liter than those limits set and published from time to time by the Illinois Environmental Protection Agency; provided, however, water or wastes containing more than the amounts allowed by the Illinois Environmental Protection Agency limits may be exceeded, if such wastes will not, (a) interfere with the biological process of the sewage treatment works, or (b) interfere with the proper operation of the sewage works, or (c) cause obstruction to flows in the sewers, or (d) cause pollution as herein defined by the Illinois Environmental Protection Agency;
10. Copper exceeding 0.3 ppm;
11. Zinc exceeding 0.5 ppm;
12. Chrome (Hexavalent) 0.0 ppm;
13. Aluminum exceeding 800.0 ppm;
14. Cadmium exceeding 0.5 ppm;
15. Cyanide exceeding 0.0 ppm;
16. Fluorides exceeding 400.0 ppm;
17. Chlorides exceeding 7000.0 ppm;
18. Nickel exceeding 2.0 ppm;
19. Phenols exceeding 1.0 ppm;
provided however, water or wastes containing more than the amounts as set forth above in this section may be exceeded, if such wastes will not (a) interfere with the biological process of the sewage treatment works, or (b) interfere with the proper operation of the sewage works, or (c) cause obstruction to flows in the sewers, or (d) cause pollution as herein defined by the sanitary water board.
C. 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 sewer superintendent that such 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 opinion as to the acceptability of these wastes, the sewer superintendent will give consideration to such 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, degree of treatability of wastes in the sewage treatment plant, and maximum limits established by regulatory agencies. The substances prohibited are: 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 such degree that the sewage treatment plant effluent cannot meet the requirements of agencies having jurisdiction over discharge to the receiving waters.
D. 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 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 sewer superintendent 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 sewer superintendent may:
1. Reject the wastes;
2. Require pretreatment to an acceptable condition for discharge to the public sewers;
3. Require control over the quantities and rates of discharge; and/or
4. Require payment to cover the added costs of handling and treating the wastes not covered by existing taxes or sewer charges.
E. If the sewer superintendent 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 sewer superintendent, and subject to the requirements of all applicable codes, ordinances and laws.
(Ord. 81-63 § 1, 1980; Ord. 541 § 1, 1976; prior code § 20.601).