§ 51.070. DISCHARGE OF WASTES TO SEWAGE SYSTEM.

(A) General regulatory powers of town. The proper officers of the town are authorized to prohibit the dumping of wastes into the town's sewage system which in their discretion are deemed harmful to the operation of the town's sewage disposal works.

(`86 Code, § 2-4-12)

(B) Certain substances or wastes prohibited. Except pursuant to a special treatment agreement pursuant to § 51.092, no person shall discharge or cause to be discharged to a public sewer any of the waters or wastes described as follows:

(1) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;

(2) Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance or create any hazard in the receiving waters of the sewage treatment plant;

(3) Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works; or

(4) Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers and the like) either whole or ground by garbage grinders.

(`86 Code, § 2-4-13)

(C) Certain substances or wastes subject to prohibition or restriction at discretion of Superintendent.

(1) No person shall discharge or cause to be discharged certain substances, materials, waters or wastes if it appears likely in the opinion of the Superintendent that the 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 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 other pertinent factors. The substances which may be prohibited or restricted by the Superintendent under this section are described as follows:

(a) Any liquid or vapor having a temperature higher than 150°F (65°C);

(b) Any water or waste containing fats, wax, grease 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° and 150°F (0° and 65°C);

(c) Any garbage that has not been properly shredded;

(d) Any waters or wastes containing strong acid iron pickling wastes or concentrated plating solutions whether neutralized or not;

(e) Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances, or wastes exerting an excessive chlorine requirement, to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the Superintendent for such materials;

(f) Any waters or wastes containing phenols or other taste or odor-producing substances, in such concentrations exceeding limits which may be established by the Superintendent as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal or other public agencies of jurisdiction for such discharge to the receiving waters;

(g) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations;

(h) Any waters or wastes having a pH in excess of 9.5;

(i) Materials which exert or cause:

1. 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 sulfate);

2. Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions);

3. Unusual BOD, chemical oxygen demand or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works; or

4. Unusual volume of flow or concentration of wastes constituting "slugs" as defined by § 51.001.

(j) 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 other agencies having jurisdiction over discharge to the receiving waters.

(2) 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 as follows, and which in the judgment of the 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 Superintendent 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, under the provisions of § 51.092, to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges.

(`86 Code, § 2-4-14)

(Ord. 6-9-70-3, passed - -; Am. Ord. 86-C2, passed 7-15-86) Penalty, see § 10.99