Neb. Rev. Stat. § 23-3629

No county shall permit the connection of any lot or any structure used or to be used for any residential purpose to a sewerage disposal system and plant or plants constructed pursuant to the County Industrial Sewer Construction Act unless (1) such lot was platted and recorded prior to March 1, 1994, or such structure is or will be constructed on a lot platted and recorded prior to March 1, 1994, or (2) such connection is authorized by the appropriate city or village as provided in the act.