(A) 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 Superintendent that such wastes can harm either the sewers, sewage treatment process or equipment; have an adverse effect on the receiving stream; or 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 prohibited are:
(1) Any liquid or vapor having a temperature higher than 150°F (65°C);
(2) Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 milligrams per liter or containing substances which may solidify or become viscous at temperatures between 32°F and 150°F (0° and 65°C);
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the Superintendent;
(4) Any waters or wastes containing strong acid iron-pickling wastes, or concentrated plating solutions, whether neutralized or not;
(5) 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 regulation;
(6) Any waters or wastes having a pH in excess of 9.5;
(7) Copper exceeding a concentration of 3.0 milligrams per liter;
(8) Zinc exceeding a concentration of 2.0 milligrams per liter;
(9) Chrome (Hexavalent) in a concentration of 10.0 milligrams per liter. Chrome (Trivalent) in a concentration of 3/0 milligrams per liter;
(10) Aluminum exceeding a concentration of 800 milligrams per liter;
(11) Cadmium exceeding a concentration of 2.0 milligrams per liter;
(12) Cyanide exceeding a concentration of 2.0 milligrams per liter;
(13) Fluorides exceeding a concentration of 400 milligrams per liter;
(14) Chlorides exceeding a concentration of 3,000 milligrams per liter;
(15) Nickel exceeding a concentration of 3/0 milligrams per liter;
(16) Phenols exceeding a concentration of 0/5 milligrams per liter; and
(17) 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.
(B) 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 in division (A) above, 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:
(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; or
(4) Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of § 51.071.
(C) If the 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 Superintendent and subject to the requirements of all applicable codes, ordinances and laws.
(1989 Code, § 51.62) (Ord. 6-1974, passed 7-15-1974) Penalty, see § 51.999