(A) No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, or subsurface drainage, to any public sanitary sewer.
(B) No person shall discharge or cause to be discharged any of the following waters or wastes to any public sanitary sewer. (Refer to division (C) below and § 51.09)
(1) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas.
(2) Any water 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 to constitute a hazard to humans or animals, to create a public nuisance, or to create any hazard in the receiving waters or the sewage treatment works.
(3) Any waters or wastes having a pH less than 6.5 or greater than 8.5 or containing heavy concentrations of salts or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage plant.
(4) Solids or viscous substances in quantities or of such size capable of causing obstruction on the flow of sewage or other interference to 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, hair and fleshing or entrails, either whole or ground by garbage grinders.
(5) Any discharge from heat pumps or other apparatus or equipment using water as a heat exchange medium.
(C) 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 city that such wastes can harm either the sewers, sewage treatment process, or equipment having adverse effect on the receiving stream or can otherwise endanger life, limb, public property, or constitute a nuisance. In forming their opinion as to the acceptability of these wastes, the city 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 the following.
(1) Any liquid or vapor having a temperature higher that 150°F. or 65°C.
(2) 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. or 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 3/4 h.p. or greater shall be subject to the review and approval of the city.
(4) Any waters or wastes containing strong acid, iron pickling wastes, or concentrated plating solution whether neutralized or not.
(5) Local limits shall be determined, based upon the capacity of the wastewater treatment plant (WWTP) to accommodate various pollutants, and will be allocated on a mass basis. Limits shall be allocated according to the SCDHEC-approved WWTP headworks analysis, which shall be updated from time to time.
(a) A spectrophotometer set at a wavelength of 254 nm measures the transmittance of UV light through a one-centimeter sample as a percentage relative to deionized water set at 100%. Local industry shall not add any material, solution or color to the wastewater stream that will cause the UV transmittance to fall below 65%.
(b) Wastewater with color or UV inhibitors, which cause interference or prevent the POTW from complying with NPDES permit or other state and federal regulations.
(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 city as necessary after treatment of the composite sewage to meet requirements of the state, federal or other public agencies of jurisdiction of such discharge of the receiving waters.
(7) Any radioactive wastes or isotopes of such half life or concentration as may exceed limits established by the city in compliance with applicable state and federal regulations.
(8) Any waters or wastes having a pH outside of the range of 6.5 to 8.5.
(9) Materials which exert or cause the following.
(a) Unusual concentration of inert suspended solids; such as, but not limited to, earth, lime slurries, and lime residues or of dissolved solids, such as, but not limited to, sodium chloride and sodium sulfate.
(b) Excessive discoloration; such as, but not limited to, dye wastes and vegetable tanning solutions.
(c) Unusual B.O.D., chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works.
(d) Unusual volume of flow or concentration of wastes constituting "sludge" as defined herein.
(10) 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 cannot meet the requirements of other state or federal agencies having jurisdiction over discharge to the receiving waters.
(D) If any waters or wastes are discharged or are proposed to be discharged to the public sanitary sewers which waters contain the substances or possess the characteristics enumerated in division (C) above, or any other substances which in the judgment of the city may have a deleterious effect upon the sewage treatment works, processes, equipment, or receiving water, or which otherwise create a hazard to life or constitute a public nuisance, the city may do the following.
(1) Reject the wastes.
(2) Require pretreatment to reduce the waste to an acceptable condition in accordance with Federal Regulation 40 CFR Part 403 prior to discharge to the public sewers.
(3) Require control over the quantities and rates of discharge.
('64 Code, § 24-A-5(a) - (d)) (Ord., passed 7-8-80; Am. Ord., passed 10-14-80; Am. Ord., passed 9-28-82; Am. Ord. 10-037, passed 9-14-10) Penalty, see § 51.99