In any location where the Village Board determines that public water service or public sewage service is not in the public interest due to unique factors such as, but not limited to, excessive cost, terrain, etc., the lot shall have adequate soils for the construction and operation of private individual sewage treatment and private individual water systems, and sufficient area for at least one (1) replacement private sewage treatment system according to Ch. SPS 383, Wis. Adm. Code. Such determination shall be made by the Village Board based on whether unique circumstances exist and the overall well-being of best interests of serving the citizenry with public sewer/water facilities.