(A) Water discharges. No person shall discharge or cause to be discharged into any sanitary sewers any storm water, surface water, ground water, roof runoff or sub-surface drainage.
(B) Prohibited discharges, water/wastes. Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or waste into any public sanitary sewer:
(1) Any clothing, rags, textiles, remnants or wastes, cloth, scraps and the like, except fibers, scraps and the like which will pass through one-fourth inch mesh screen or its equivalent in screening ability;
(2) Any liquid or vapor in amounts which will inhibit biological activity at the treatment plant, resulting in interference or causing damage, but in no case in quantities that the temperature exceeds 150ºF at the town sewage system or 104ºF at the treatment plant unless SC DHEC, upon request of the town, approves alternate temperature limits;
(3) Any water or waste containing more than 100 parts per million by weight of fats, oils or grease;
(4) Any liquids, solids or gases which by reason of their nature or quality may cause fire or explosion, or be in any way injurious to persons, the sewerage system, the sewage treatment works or the operation of the sewage treatment works;
(5) Any liquid wastes in which the suspended solids exceed 400 parts per million by weight;
(6) Any liquid wastes having a BOD of more than 250 parts per million except as hereinafter provided for;
(7) Any waters or wastes having a stabilized pH lower than 5.0 or higher than 9.0 or having other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the wastewater treatment plant;
(8) Any waters or wastes containing a poisonous or toxic substance or any other materials in sufficient quantity to injure or interfere with any sewage treatment process, or constitute a hazard to humans or animals, or create any hazard in the receiving stream at the sewage treatment plant;
(9) Any waters or wastes containing suspended solids of a character and quantity that unusual attention or expense is required to handle the materials in the sewerage system;
(10) Any noxious or malodorous gas or substance capable of creating a public nuisance;
(11) Any garbage that has not been properly shredded;
(12) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, bones, feathers, tar, plastics, wood, paunch manure, butcher’s offal or any other solid or viscous substances capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewerage system;
(13) Any materials which form excessive amounts of scum that may interfere with the operation of the sewage treatment works or cause undue additional labor in connection with its operation;
(14) Any waters or wastes containing dyes or other color which cannot be removed by biological processes and which require special chemical treatment;
(15) Any waters or wastes containing lint in quantities as to be detrimental to sewer lines, sewage pumps or sewage treatment works; or
(16) Any pollutants, including oxygen-demanding pollutants (BOD and the like) released at a flow rate and/or pollutants concentrated which a user knows or has reason to know will cause interference to the POTW. In no case shall a slug load have a flow rate or contain concentration or qualities of pollutants that exceed for any time period longer than 15 minutes more than five times the average 24-hour concentration, quantities or flow during normal operation.
(C) Special arrangements. The approving authority, without limitation by other sections of this chapter, may authorize any person to discharge industrial wastes of unusual strength or character into the sewers of the town under approved conditions of pretreatment. The approving authority may prohibit entry of particular industrial wastes into the sanitary sewer whenever the action is necessary to prevent damage to the system or to determine the effects of the wastes on the sewage system.
(D) Pretreatment standards. Upon the promulgation of any federal or state categorical pretreatment standards or an individual standard, that standard, if more stringent than limitations imposed under this subchapter shall apply.
(1995 Code, § 4-3002) (Ord. passed 2-16-1982; Ord. passed 6-3-1986; Ord. 030519B, passed 3-5-2019)