(A) No person shall discharge or cause to be discharged any storm water, surface water, ground water, roof runoff, subsurface drainage, cooling water or unpolluted industrial process waters to any sanitary sewer.
(B) Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designated storm sewers, or to a natural outlet approved by the Superintendent. Industrial cooling water or unpolluted process waters may be discharged, upon approval of the Superintendent, to a storm sewer or natural outlet.
(C) Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any municipal sewer:
(1) Any liquid or vapor having a temperature higher than 150º F;
(2) Any water or waste which may contain more than 100 parts per million, by weight, of fat, oil, or grease;
(3) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
(4) Any garbage that has not been property shredded;
(5) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, leathers, tar, plastics, wood, paunch, manure, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage system;
(6) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process constitute a hazard to humans or animals or create any hazard in the receiving waters of the sewage treatment plant;
(7) Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant; or
(8) Any noxious or malodorous gas or substance capable of creating a public nuisance.
(D) Grease, oil and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of the liquid wastes containing grease in excessive amounts, or any inflammable wastes, sand and other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the Superintendent, and shall be located as to be readily and easily accessible for cleaning, and inspection. Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction; water tight and equipped with easily removable covers which when bolted in place shall be gas tight and watertight.
(E) Where installed, all grease, oil and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all times.
(F) Pre-treatment of waste may be required if deemed necessary by the Superintendent. If required, pre-treatment must comply with SD DENR requirements, be approved by the Board of Trustees and installed at no expense to the town. Pre-treatment shall occur prior to municipal treatment facilities and processes.
(Ord. 15, passed 6-20-2006; Ord. 15R-2015, passed 2-2-2015) Penalty, see § 10.99