The purpose of this Section is to provide for the collection of an assessment for sewer connection, which assessment shall be used by the City Waste Water Department to participate in the construction of privately funded sewers. The assessment for connection to a publicly funded sewer shall be equivalent to the average cost a property owner would pay as his share of group project to construct a privately funded sewer. The participation in the construction of privately funded sewers shall be equivalent to the cost a property owner would pay as his share of a group project to construct a privately funded sewer. The participation is to be paid when such a property owner is not participating in the group project by virtue of the fact that he has been allowed to connect to a publicly funded sewer and is therefor increasing the financial burden of the group of property owners who are not adjacent to the publicly funded sewer.