921.03 PROHIBITED WASTES.
   No person shall discharge or cause to be discharged any of the following waste materials to any public sewer:
   (a)   Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
   (b)   Any garbage that has not been properly shredded.
   (c)   Any ashes, cinders; sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch. manure or any other solid viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the Municipal Wastes Works.
   (d)   Any noxious or malodorous gas or substance capable of creating a public nuisance.