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.
Stormwater and all other unpolluted drainage shall be discharged
to such sewers as are specifically designated as "combined sewers"
or "storm sewers," or to a natural outlet approved by the Superintendent,
to a storm sewer, combined sewer, or natural outlet.