(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 approving authority, that the wastes can harm either the sewers, sewerage 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 this opinion as to the acceptability of these wastes, the approving authority will give consideration to the factors as the quantities of subject wastes in relation to flows and velocities in the sewers; materials of construction of the sewers; nature of sewerage treatment process; capacity of the sewerage treatment plant; degree of treatability of wastes in the sewerage treatment plant, and other pertinent factors.
(B) 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, 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°C and 65°C);
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor greater than three-fourths horsepower shall be subject to review and approval of the approving authority;
(4) Any waters or wastes containing strong acid, iron, pickling wastes or concentrated plating solutions whether neutralized or not;
(5) Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances; or wastes exerting an excessive chlorine requirement, to the degree that any such material received in the composite sewerage at the sewerage treatment works exceeds the limits established by the approving authority for such materials;
(6) Any waters or wastes containing phenols or other taste- or odor-producing substances, in such concentration exceeding limits which may be established by the approving authority, as necessary, after treatment of the composite sewerage, to meet the requirements of the state, federal or other public agencies of jurisdiction for the discharge to the receiving waters;
(7) Any radioactive wastes or isotopes of long half-life (over 100 days) without special permit. The radioactive isotopes I131 and p32 used at hospitals are not prohibited if properly diluted at the source;
(8) Any waters or wastes having a pH in excess of 9.5;
(9) Materials which exert or cause:
(a) Unusual concentration of inert suspended solids including, but not limited to, sodium chloride and sodium sulfate;
(b) Excessive discoloration, including, but not limited to, dye wastes and vegetable tanning solutions;
(c) Unusual BOD, chemical oxygen demand or chlorine requirements in such quantities as to constitute a significant load on the sewerage treatment works; and/or
(d) Unusual volume of load or concentration of wastes constituting “slugs”.
(10) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewerage treatment processes employed, or are amenable to treatment only to the degree that the sewerage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(1994 Code, § 52.047) (Ord. 262, passed 3-8-1976) Penalty, see § 52.999