The owners of all houses, buildings or properties
used for human occupancy, employment, recreation or other purposes,
situated within this public corporation and abutting on any street,
alley or right-of-way in which there is now located or may in the
future be located a public sanitary sewer, is hereby required at his
expense to install suitable sewage facilities therein, and to connect
such facilities directly with the proper public sewer in accordance
with the provisions of this Part 2, within six months after date of
official notice to do so, whenever such connection is required by
state law, provided that, with respect to any structure erected after
December 20, 1985, connection shall be made prior to the occupancy
of said structure.