Wis. Stat. § 283.93: Environmental pollution.

Regulatory actions taken by the department to eliminate or control environmental pollution shall be exempt from the provisions of s. 1.11, other than:

(1) Involvement in federal financial assistance grants for the construction of publicly owned treatment works;

(2) Financial assistance under s. 281.55 or 281.57 or under ss. 281.58 and 281.59; and

(3) Issuance of permits or approvals for new sources of environmental pollution.