This ordinance sets out the methodology by which the Water Pollution Control Authority (WPCA) assesses residential and commercial property owners in the Crystal Lake area most benefited by the sewer system constructed to eliminate public health hazards of under-sized, on-lot disposal systems and raw wastewater discharges in this high density area. Vacant land shall not be assessed by the WPCA until it is built upon and derives direct benefit from the system. Assessments may be spread out over up to 30 years, as determined by the WPCA, but remaining balances are due upon transfer of property ownership.