The owner of all buildings or properties used for human occupancy,
employment, recreation or other purposes, situated within the District
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
of the District, is hereby required, at his expense, to install suitable
sanitary facilities therein. The owner shall apply to the District
to connect such facilities directly to the proper public sewer within
90 days of official notice of availability. Once approved by the District
the owner shall connect such facilities in accordance with the provisions
of this article within 90 days after date of official notice to do
so, provided that said public sewer is within 500 feet of the property
line.