(A) The following described substances, materials, waters or wastes shall be limited in discharges to municipal systems to concentration or quantities which will not harm either the sewers, wastewater treatment process or equipment, will not have an adverse effect on the receiving stream, or will not otherwise endanger lives, limb, public property or constitute a nuisance. The Village Administrator may set limitations lower than the limitations established in the regulations below if in his or her opinion more severe limitations are necessary to meet the above objectives. Deliberate dilution with unpolluted water to meet the concentrations established in the regulations below shall not be acceptable. In forming his or her opinion as to the acceptability, the Village Administrator will give consideration to such facts as the quantity of such waste in relation to flows and velocities in the sewers, materials of construction of the sewers, the wastewater treatment process employed, capacity of the wastewater treatment plant, and other pertinent factors.
(B) The limitations or restrictions on materials or characteristics of waste or wastewater discharged to the sanitary sewer which shall not be violated without approval of the Village Administrator are as follows:
(1) Wastewater having a temperature higher than 150°F;
(2) Wastewater containing more than 50 milligrams per liter of petroleum oil, non- biodegradable cutting oils, products of mineral oil origin, floatable oils, fat, wax and grease;
(3) Any garbage that has not been properly shredded. Garbage grinders may be connected to sanitary sewers from homes, hotels, institutions, restaurants, hospitals, catering establishments or similar places where garbage originates from the preparation of food in the kitchens for the purpose of consumption on the premises or when served by caterers;
(4) (a) Any waters or wastes containing solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a public nuisance or create any hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the wastewater treatment plant including, but not limited to, cyanides, hexavalent chromium, copper, zinc, cadmium, nickel and phenols in the wastes as discharged to the public sewer. The following concentrations shall not be exceeded in industrial wastes discharged to the public sewers:
Cadmium | 0.2 mg/l |
Copper | 1.0 mg/l |
Hexavalent chromium | 1.0 mg/l |
Hydrogen sulfide | 10 mg/l |
Lead | 0.5 mg/l |
Mercury | 0.01 mg/l |
Nickel | 2.0 mg/l |
Phenols | 0.2 mg/l |
Silver | 0.2 mg/l |
Sulfur dioxide gas | 5 mg/l |
Total cyanide (CN) | 0.5 milligrams per liter (mg/l) |
Zinc | 1.0 mg/l |
(b) These maximum concentrations may be changed as necessary by the Village Administrator or state regulatory agencies based on new information concerning inhibitory substances or to protect treatment plant processes. Industrial dischargers covered by federal pretreatment requirements shall meet those limitations specified under effluent guidelines published under §§ 304(b) and 307(b) of the Federal Act, being 33 U.S.C. §§ 1314(b) and 1317(b) or the above concentrations, whichever is more stringent. Major contributing industries discharging incompatible pollutants into the public sewers shall be regulated as provided in § 51.017.
(5) Any waters or wastes containing odor-producing substances exceeding limits which may be established by the Village Administrator or any local or state regulatory agencies;
(6) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits in compliance with applicable state or federal regulations;
(7) Quantities of flow, concentrations or both which constitute “slug” as defined in § 51.001;
(8) Waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable 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; and
(9) Any water or wastes which by interaction with water or wastes in the public sewer system, release noxious gases, from suspended solids which interfere with the collection system, or create a condition deleterious to structures and treatment processes.
(Ord. 78-4, passed 2-13-1978; Ord. 92-20, passed 9-28-1992) Penalty, see § 51.999