Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes into a public sewer, to-wit:
(A) Any liquid or vapor having a temperature higher than 150°F.
(B) Any water or waste which may contain more than 100 parts per million of animal or vegetable fat, oil or grease.
(C) Any gasoline, benzine, naptha, fuel oil or other inflammable or explosive liquid, solid or gas.
(D) Any grease, oil or other substance that will become solid or viscous at temperatures between 32° and 150° F.
(E) Any garbage that has not been properly shredded.
(F) Any mineral oil or grease, ashes, cinders, sand, mud, plastics, wood, paunch manure, straw, shavings, metal, glass, rags, feathers, asphalt, tar, 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 works.
(G) Any waters or wastes having a pH lower than 5.5 or higher than 10.0 or having any other corrosive properties capable of causing damage or hazard to structure, equipment and personnel of the treatment works.
(H) Any waste containing in excess of 4.20 PPM total chromium, 0.25 PPM hexavalent chromium, 7.50 PPM total metals (copper, nickel, total chromium, zinc), 1.00 PPM cadmium, 0.64 PPM total cyanide, 0.50 PPM phenols, or any wastes containing other metallic compounds sufficient to impair the operation of the waste water treatment processes.
(I) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure any sewage treatment process, constitute a hazard to humans or animals, or create any hazard in receiving waters or in the sewage treatment plant.
(J) Any noxious or malodorous gas or substance capable of creating a public nuisance.
(K) 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.
(L) Any wastes that contain insoluble solids in excess of 10,000 PPM or exceeds a daily average of 500 PPM or that contains a combination of soluble and insoluble material in excess of 20,000 PPM or exceeds a daily average of 2,000 PPM.
(M) Any wastes containing any insoluble substance that will not pass four mesh per inch screen.
(Ord. 542, sec. v)