A.
No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer. Existing facilities presently connected to the combined sewers may remain until combined sewers become separated, at which time they shall be disconnected.
B.
Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as combined sewage or storm sewers, or to a natural outlet approved by the City Engineer. Industrial cooling water or unpolluted process waters may be discharged, upon approval of the City Engineer, to a storm sewer, combined sewer or natural outlet.