No person shall discharge or cause to be discharged any incompatible wastewaters or wastes to any public sewers, including the following:
(1) The discharge of sanitary wastewater into a storm sewer system. This is prohibited without exception.
(2) Stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer. Unpolluted cooling waters may, upon written application and approval by the town manager, be discharged to storm sewers or storm drains.
(3) Waters or wastes containing substances which are not amenable to treatment or removal by the waste treatment processes employed or are amenable to treatment only to such degree that the waste treatment plant effluent and residuals outputs cannot meet the requirements of the NCDENR permits applicable to plant operations.
(4) Any waters 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, constitute a hazard to humans or animals, or create a public nuisance.
(5) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquids, solid or gas.
(6) Any waters or wastes having a pH lower than 5.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the WWTP.
(7) Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers or other interference with the proper operation of the WWTP, such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastic, wood, un-ground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
(Code 1989, § 51.16)