Wis. Stat. § 289.12: Landfill official liability.

(1) Definition. As used in this section, “landfill official” means any officer, official, agent or employee of the state, a political corporation, governmental subdivision or public agency engaged in the planning, management, operation or approval of a solid or hazardous waste disposal facility.

(2) Exemption from liability. A landfill official is immune from civil prosecution for good faith actions taken within the scope of his or her official duties under this chapter or ch. 291 or 292.