The following described substances, materials, waters or waste shall be discharged to the public sewer only in concentrations or quantities which will not harm either the wastewater treatment works or its personnel, will not have an adverse effect on the receiving stream or will not otherwise endanger lives or public property or constitute a nuisance. The Water and Sewer Superintendent/Village Administrator may set limitations more restrictive than the limitations established below if said limitations are necessary to meet the objections of this chapter, in the Water and Sewer Superintendent/Village Administrator’s opinion. Deliberate dilution with unpolluted water to meet the concentrations established below shall not be acceptable. In forming an opinion as to acceptability, the Water and Sewer Superintendent/Village Administrator shall give consideration to such facts as the quantity of subject waste in relation to flows and velocities in the public sewer, materials of construction of the public sewer, the wastewater treatment process employed, the capacity of the wastewater treatment plant, the degree of treatability of the waste in the wastewater treatment plant and other pertinent factors:
(A) Wastewater with a CBOD concentration greater than 600 parts per million or with a suspended solids concentration greater than 900 parts per million;
(B) Wastewater having a temperature higher than 150ºF;
(C) Wastewater containing more than 50 mg/l of petroleum oil, non-biodegradable cutting oils, any product of mineral oil origin or floatable oils, fat, wax or grease;
(D) Wastewater containing toxic, hazardous 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 in the receiving waters of the wastewater treatment plant;
(E) (1) In accordance with § 307(a) of the Clean Water Act (33 U.S.C. § 1317(a)), the following concentrations shall be considered toxic and/or hazardous and shall not be exceeded in wastes discharged to the public sewers:
Arsenic | 0.2 mg/l |
Barium | 1.0 mg/l |
Boron | 5.0 mg/l |
Cadmium | 0.1 mg/l |
Chromium +3 | 0.5 mg/l |
Chromium +6 | 0.5 mg/l |
Cobalt | 1.0 mg/l |
Copper | 0.5 mg/l |
Cyanide (CN) | None permitted |
Fluoride | 5.0 mg/l |
Iron | 5.0 mg/l |
Lead | 0.5 mg/l |
Mercury | 0.02 mg/l |
Molybdenum | 5.0 mg/l |
Nickel | 2.0 mg/l |
Phenols | 5.0 mg/l |
Radioactive substances: gross beta activity (in the known absence of strontium and alpha emitters) | 1,000/micro curies per liter |
Selenium | 0.10 mg/l |
Silver | 0.03 mg/l |
Sulfides | 50.0 mg/l |
Total dissolved solids | 1,500 mg/l |
Tungsten | 5.0 mg/l |
Zinc | 2.0 mg/l |
(2) These maximum concentrations may be changed as necessary by the Water and Sewer Superintendent/Village Administrator or by federal or state regulatory agencies based on new information concerning inhibitory substances or to protect the treatment plant process. Industrial discharges covered by federal pretreatment requirements shall meet those limitations specified in the effluent regulations published pursuant to § 307(b) of the Clean Water Act (33 U.S.C. § 1317(b)), or the above concentrations, whichever limitations are more stringent.
(F) Wastewater containing odor-producing substances exceeding limits which may be established by the Water and Sewer Superintendent/Village Administrator or any local or state regulatory agencies;
(G) Quantities of flow, concentrations or both which constitute a slug;
(H) Wastewater containing substances which are not amenable to treatment or reduction by the wastewater treatment process employed, or are amenable to treatment but not to such a degree that the wastewater treatment plan effluent can meet the requirements of other agencies having jurisdiction over discharges to the waters of the state;
(I) Wastewater which by interaction with other water or wastes in the public sewer, releases obnoxious gases, forms suspended solids which interfere with the collection system or creates a condition deleterious to the wastewater treatment works;
(J) Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, wastestreams with a closed-cup flashpoint of less than 140ºF (60ºC) using the test methods specified in 40 C.F.R. § 261.21;
(K) Wastewater having a pH less than 5.0 or more than 9.0, or otherwise causing corrosive structural damage to the POTW or equipment;
(L) Trucked or hauled pollutants, except at discharge points designated and approved by the Water and Sewer Superintendent/Village Administrator;
(M) Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye waste and vegetable tanning solutions, which consequently imparts color to the treatment plant’s effluent, thereby violating the village’s NPDES permit;
(N) Wastewater containing radioactive wastes or isotopes except in compliance with applicable state or federal regulations;
(O) Storm water, surface water, ground water, artesian well water, roof run-off, subsurface drainage, swimming pool drainage, condensate, deionized water, non-contact cooling water and unpolluted wastewater, unless authorized by the Water and Sewer Superintendent/Village Administrator;
(P) Sludges, screenings or other residues from the pretreatment of industrial wastes;
(Q) Medical wastes, except as specifically authorized by the Water and Sewer Superintendent/Village Administrator in a wastewater discharge permit;
(R) Wastewater causing, alone or in conjunction with other sources, the treatment plant’s effluent to fail a toxicity test; and
(S) Detergents, surface-active agents or other substances which may cause excessive foaming in the POTW.
(Ord. O-20-2007, passed 1-2-2008)