(1)

When public sewers approved by the Department of Natural Resources become available to the structure or premises served, the private sewage system shall be disconnected within one year and a connection made to the public sewer. Determination of whether sewer is available shall be made by the utility having jurisdiction. Abandonment of the disconnected private sewage system shall be done in accordance with the provisions of Wis. Admin. Code ch. SPS 383.

(2)

The components of an existing private sewage system that are not part of the approved design of a replacement system shall be abandoned at the time of the installation of the replacement system by the plumber installing the system. The abandonment shall comply with Wis. Admin. Code ch. SPS 383.