In all buildings and premises, except one- and two-family dwellings hereafter (September
20, 1971) erected, the stormwater drainage from such building or premises shall be
run in an entirely separate system of piping from the sanitary sewerage and shall
be carried in the building storm drain and the building storm sewer to the public
storm sewer in the street, alley, easement or thoroughfare where a public storm sewer
exists or shall be run out separately to the property line and there combined with
the building sanitary sewer where a combined sewer only exists in the street, alley,
easement or thoroughfare, when approved by the department of safety and inspections
and the department of public works. This connection will not be allowed for one-and
two-family dwellings. The invert of the building storm sewer shall not be deeper than
five (5) feet at the property line.
