(A) The following described substances, materials, water or wastes shall be limited in discharges to municipal systems to concentrations or quantities which will not harm either sewers, the wastewater treatment works treatment process or equipment, will not have an adverse effect on the receiving stream and/or soil, vegetation and ground water or will not otherwise endanger lives, limb, public property or constitute a nuisance. The Commission may set limitations more severe than limitations established in the regulations below if, in their opinion, the more severe limitations are necessary to meet the above objectives. In forming their opinion as to the acceptability of wastes, the Commission will give consideration to the factors as the quantity of subject waste in reaction to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, the Commission’s NPDES and/or SDS permit, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant and other pertinent factors.
(B) The limitations or restrictions on materials or characteristics of waste or wastewaters discharged to the sanitary sewer which shall not be violated without approval of the Commission are as follows:
(1) Any wastewater having a temperature higher than 150°F (65°C), or causing, individually or in combination with other wastewater, the influent at the wastewater treatment plant to have a temperature exceeding 104°F (40°C), or having heat in amounts which will inhibit biological activity in the wastewater treatment works resulting in interference therein;
(2) Any waters or wastes containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscuous at temperatures between 32°F and 150°F (150°F) (0°C and 65°C), and any wastewater containing oil and grease concentrations of mineral origin of greater than 100 mg/l, whether emulsified or not;
(3) Any quantities of flow, concentrations or both which constitute a “slug,” as defined herein;
(4) Any garbage not properly shredded, as defined herein; (Garbage grinders may be connected to sanitary sewers from homes, hotels, institutions, restaurants, hospitals, catering establishments or similar places where garbage originates from the preparation of food on the premises or when served by caterers.)
(5) Any noxious or malodorous liquids, gases or solids which either singly or by interaction with other wastes are capable of creating a public nuisance or hazard to life or are sufficient to prevent entry into the sewer for their maintenance and repair;
(6) Any wastewater with objectionable color not removed in the treatment process, such as, but not limited to dye wastes and vegetable tanning solutions;
(7) Non-contact cooling water or unpolluted storm, drainage or groundwater;
(8) Wastewater containing 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) in which quantities that would cause disruption with the wastewater disposal system;
(9) Any radioactive waste or isotopes of a half-life or concentration as may exceed limits established by the Commission in compliance with applicable state or federal regulations;
(10) Any waters or wastes containing the following substances: arsenic, cadmium, copper, cyanide, lead, mercury, nickel, silver, total chromium, zinc or phenolic compounds to a degree that the materials received prevent adequate treatment of the waste;
(11) Any wastewater which creates conditions at or near the wastewater disposal system which violates any statute, rule, regulation or ordinance of any regulatory agency or state or federal regulatory body; and/or
(12) Any waters or wastes containing BOD5 or suspended solids of the character and quantity that unusual attention or expense is required to handle the materials at the wastewater treatment works, except as may be permitted by specific written agreement subject to the provisions hereof.
(`87 Code, § 403.04)