§ 58-50. Prohibited discharging.

No person shall convey, deposit, or cause or allow to be discharged, conveyed, or deposited into the wastewater system any pollutant other than a compatible pollutant which the system expressly agrees to accept from a user, or any wastewater containing any of the following:

(a)

Oils and grease. Fats, wax, grease, or oils in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 0;deg; and 65;deg; centigrade at the point of discharge into the wastewater system, or concentrations or amounts of oil or grease from industrial facilities violating pretreatment standards.

(b)

Explosive mixtures. Liquids, solids, or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion. Such prohibited materials include but are not limited to gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, and carbides.

(c)

Noxious materials. Solids, liquids, or gases from processes employed in the user's business, trade, or profession which, either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life, or are or may be sufficient to prevent entry into a sewer for maintenance or repair.

(d)

Improperly shredded garbage. Garbage which is not properly shredded garbage as defined in this division.

(e)

Radioactive wastes. Radioactive wastes or isotopes, unless their disposal via wastewater is authorized by federal, state, and local regulations, and then only when discharge into the wastewater system does not cause damage or a hazard to the system, the persons operating the system, or the general public.

(f)

Excessive levels to toxic substances. Any toxic substances in amounts which cannot be handled by the system and which exceed standards promulgated by the United States Environmental Protection Agency pursuant to Section 307 (b) of the FWPCA, or toxic substances included in any regulations of the Michigan Department of Natural Resources which identify and prohibit discharge of toxic substances into the water of the state.

(g)

Untreatable pollutants. Any pollutant which deleteriously affects the wastewater system or process, or any pollutant which is regulated by the NPDES permit issued to the city and which will pass untreated or unaffected by the treatment system.

(h)

Discoloring pollutants. Any pollutant which imparts a color to the wastewater in the wastewater system, which color cannot be removed by the system's treatment process or which is prohibited by the NPDES.

(i)

Corrosive wastes. Any wastewater having a pH lower than 6.2 or higher than 9.8, measured at the point of entry to the wastewater system, or having any other corrosive property capable of causing damage to any equipment or portion of the wastewater system or injury to the system's personnel.

Solids or viscous substances in quantities or of such size capable of causing obstruction to the flow of sewers, or other interference with the proper operation of the wastewater system such as, but not limited to, ashes, bones, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, whole blood, paunch manure, hair, fleshings, or entrails.

(Ord. No. 95, 10-1-79)