Wis. Stat. § 99.07: Penalties.

(1) Except as provided in sub. (2), a person who violates this chapter or rules promulgated under this chapter shall forfeit not less than $100 nor more than $500 for the first violation and not less than $200 nor more than $1,000 for a subsequent violation.

(2) A person who willfully violates this chapter or rules promulgated under this chapter shall be fined not less than $200 nor more than $1,000 or imprisoned not more than 6 months or both.

(3) Each day of violation constitutes a separate offense.