1.6 Enforcement, Inspections, Penalties, and the Agricultural Chemical Cleanup Program
Key Takeaways
- Wis. Stat. 94.71(1)(a)1 sets forfeitures of not less than $100 and not more than $500 for a first violation, and not less than $200 and not more than $1,000 for any subsequent violation within 5 years.
- A commercial applicator, dealer, or distributor who knowingly violates ss. 94.67 to 94.71 may be fined up to $5,000 or jailed up to one year in county jail or both; private applicators and other persons face up to $1,000 or 30 days.
- Wis. Stat. 94.71(1)(b) makes certified applicators responsible for the acts of their employees and of persons working under their supervision, so a supervisor cannot escape liability by pointing at an untrained crew member.
- ATCP 29.50(6) forbids an employer or contractor from directing, compelling, or coercing an employee to violate the pesticide statutes or rules, and joint liability with the employee remains available.
- Wisconsin groundwater law drives the atrazine prohibition areas: when the enforcement standard of 3 parts per billion for atrazine and its metabolites is reached, DATCP must restrict or prohibit the practice that caused the contamination.
Who Enforces What
Wisconsin holds primary enforcement responsibility for pesticide use under FIFRA, which means EPA has delegated day-to-day enforcement to the state. In practice:
- DATCP (Bureau of Agrichemical Management) licenses applicators, businesses, dealers, and products; investigates misuse and drift complaints; audits records; inspects storage and containment; and samples wells and fields.
- The Wisconsin DNR runs the 24-hour spill hotline and has jurisdiction over discharges to waters of the state.
- EPA retains authority over pesticide registration, over applications in Indian country, and over federal enforcement when a state case is not brought.
Wis. Stat. § 94.71(3) describes DATCP's toolkit: the department examines pesticides to determine compliance, may refer the facts to the district attorney for the county where the violation occurred, and — in addition to or instead of other remedies — may apply to a circuit court for a temporary or permanent injunction to prevent, restrain, or enjoin violations of ss. 94.67 to 94.71 and any rules or special or summary orders issued under them.
The Wisconsin Penalty Schedule
Federal FIFRA penalties get most of the attention, but Wisconsin has its own numbers, and they are the ones an applicator is most likely to meet.
| Violation | Wis. Stat. § 94.71 consequence |
|---|---|
| Any violation of ss. 94.67–94.71 or a rule or order issued under them — first violation | Forfeiture of not less than $100 nor more than $500 |
| Any subsequent violation within 5 years | Forfeiture of not less than $200 nor more than $1,000 |
| Knowing violation by a commercial applicator, dealer, or distributor | Fine of not more than $5,000, or not more than one year in county jail, or both |
| Knowing violation by any other person, including a private applicator | Fine of not more than $1,000, or not more than 30 days, or both |
Two structural features of that table repay study. First, the forfeitures carry a floor as well as a ceiling — "not less than $100" means a first violation cannot be written off with a token fine. Second, the five-year lookback defines what counts as a subsequent violation, which parallels the five-year certification cycle.
Layer the federal numbers on top. FIFRA § 14(a)(1) sets a statutory civil penalty of up to $5,000 per violation for commercial applicators, dealers, distributors, and registrants, a ceiling EPA raises every year for inflation under the Federal Civil Penalties Inflation Adjustment Act; the adjusted maximum has stood above $20,000 per violation for several years, so always check EPA's current civil monetary penalty table rather than quoting a remembered figure. FIFRA § 14(a)(2) allows a written notice of warning for a private applicator's first offense and a civil penalty of up to $1,000 for a violation committed after that warning. Criminal exposure under § 14(b)(1)(B) runs to $25,000 and/or one year for commercial applicators, and $1,000 and/or 30 days for private applicators.
Supervisor and Employer Liability
Two provisions make pesticide compliance a management problem, not just an operator problem.
Wis. Stat. § 94.71(1)(b): "Certified applicators shall be responsible for the acts of persons who are their employees or acting under their supervision and engaged in the use or application of pesticides." A certified applicator who signs off on a trainee's work owns that work.
ATCP 29.50(6): No person may direct, compel, or coerce an employee or contract agent to violate ss. 94.67 to 94.71 or ch. ATCP 29, or to use a pesticide in a manner the person has reason to believe is likely to result in such a violation. The rule's note adds that nothing in the chapter limits the civil or criminal liability of an employer or contractor for the acts of an employee where joint liability is otherwise available.
The practical exam scenario: a crew leader tells an employee to spray in a 15 mph crosswind to finish a job before a storm. Both the employee (negligent use under ATCP 29.50(1)) and the crew leader (coercion under ATCP 29.50(6), plus supervisor responsibility under § 94.71(1)(b)) are exposed.
Defective Equipment Is Itself a Violation
ATCP 29.50(5) deserves separate mention because applicators rarely think of it as an enforcement provision. No person may use, furnish, lease, or sell pesticide application equipment that is clogged, unclean, leaking, or in disrepair, or that cannot be properly calibrated to apply pesticides at the label rate. The only carve-out is for a sale where the seller discloses the defects to the buyer in writing before the sale. A leaking boom is not merely bad practice — it is a citable violation independent of whether any pesticide ever left the target site.
The Agricultural Chemical Cleanup Program
Every applicator and business license in Wisconsin carries an Agricultural Chemical Cleanup Program (ACCP) surcharge, and knowing what it buys explains a lot about Wisconsin's rules.
- DATCP sets the surcharge amount on May 1 each year, based on the balance in the cleanup fund. When the fund is healthy, the surcharge falls or disappears; when it is drawn down, the surcharge rises. That is why the individual applicator surcharge moved from $5 for the 2026 license year to $10 for 2027, and the business surcharge from $10 to $20.
- The fund reimburses certain costs of cleaning up agricultural chemical spills and discharges, which is why Wisconsin's rules push so hard on containment: a state that pays for cleanups has a direct financial interest in preventing them.
- DATCP maintains a spill response coordinator reachable at (608) 224-4500, distinct from the DNR 24-hour spill hotline at 1-800-943-0003 that ATCP 29.48(2) requires you to call.
Groundwater Law: How a Bad Well Becomes a Use Restriction
ATCP 29.30(11)(c) requires applicators to know ch. ATCP 31 and ch. NR 80 alongside ATCP 29, 30, and 33. ATCP 31 is DATCP's Groundwater Protection Program, and it is the machinery that turns monitoring data into rules.
The atrazine story is the model. Wisconsin treats the sum of atrazine and its metabolites at concentrations above 3 parts per billion as an enforcement standard exceedance. When groundwater at a point of standards application reaches or exceeds that level, state groundwater law requires DATCP to prohibit or restrict the practice that caused it. DATCP implements that either by amending ch. ATCP 30 or by administrative order — which is precisely how Wisconsin accumulated 101 atrazine prohibition areas where mixing, loading, and application are all illegal. ATCP 30.375 even specifies the conditions under which a prohibition area may be repealed, one of which is credible scientific evidence that renewed use is not likely to cause a new exceedance.
The lesson the exam wants: in Wisconsin, a contaminated private well is not just a local problem. It is the first step in a statutory sequence that can make a legal, federally registered product illegal to use on your ground.
A DATCP investigation finds that a commercial applicator applied a herbicide inconsistent with its label in May 2026. The same applicator was cited for a different ATCP 29 violation in 2023. Under Wis. Stat. 94.71(1)(a)1, what forfeiture range applies to the 2026 violation?
A crew supervisor, running behind schedule, instructs an employee to keep spraying with a boom section that is visibly dripping between nozzles. Which statement best describes the regulatory exposure?