Wisconsin Drug Laws: Penalties, Charges & Treatment Options

Wisconsin imposes penalties for drug possession under Wis. Stat. § 961.41(3g), which makes it unlawful to knowingly or intentionally possess a controlled substance without a valid prescription. Marijuana Possession (§ 961.41(3g)(e)): A first offense for possession of marijuana is a misdemeanor punishable by up to 6 months in jail and a fine up to $1,000. A second or subsequent offense is a Class I felony carrying up to 3.5 years in prison and a $10,000 fine. Wisconsin does not distinguish between amounts for possession purposes — any quantity triggers the same charge. Schedule I and II Narcotics (§ 961.41(3g)(am)): Possession of a narcotic drug classified in Schedule I or II (including heroin, cocaine, fentanyl, and oxycodone) is a Class I felony, even for a first offense. This carries up to 3.5 years in prison and a $10,000 fine. Other Controlled Substances — Schedules I-IV (§ 961.41(3g)(b)-(d)): Possession of non-narcotic controlled substances in Schedules I through IV (such as methamphetamine, LSD, MDMA, Xanax, or Valium) is also a Class I felony for a first offense, carrying up to 3.5 years in prison and a $10,000 fine. Schedule V Substances (§ 961.41(3g)(a)): Even possession of a Schedule V substance is a Class I felony, carrying the same maximum penalty of 3.5 years imprisonment and $10,000 fine. Penalty Enhancers:

• Second and Subsequent Offenses (§ 961.48): If a person has a prior drug conviction, the maximum term of imprisonment may be doubled under Wisconsin's repeat offender statute.
• Drug-Free Zone Enhancement (§ 961.49): Distribution offenses committed within 1,000 feet of a school, park, pool, youth center, or community center, or within 1,000 feet of a school bus, carry an additional 5 years of imprisonment.
• Distribution to Minors (§ 961.46): Distributing controlled substances to a person under age 18 can double the authorized maximum term of imprisonment.

Drug Paraphernalia (§ 961.573): Possession of drug paraphernalia may be prosecuted as a civil forfeiture (fine up to $500) or, in some circumstances, as a misdemeanor.

Wisconsin prosecutes impaired driving as Operating While Intoxicated (OWI) under Wis. Stat. § 346.63. The legal BAC limit is 0.08% for adults (0.04% for commercial drivers and 0.00% for persons under age 21). Wisconsin's OWI law covers impairment from both alcohol and drugs, including any detectable amount of a restricted controlled substance in the blood (§ 346.63(1)(am)). First Offense OWI (§ 346.63(1)): A first-offense OWI is a civil forfeiture (non-criminal), not a misdemeanor — making Wisconsin one of the most lenient states for first-time offenders. Penalties include a forfeiture of $150 to $300 (plus surcharges), 6 to 9 months driver's license revocation, and a mandatory alcohol/drug assessment. No jail time unless a passenger under age 16 was present, in which case it becomes a misdemeanor with 5 days to 6 months in jail and fines of $350 to $1,100. Second Offense OWI (§ 346.65(2)(am)2): Misdemeanor. Jail time of 5 days to 6 months, fine of $350 to $1,100, license revocation of 12 to 18 months, mandatory ignition interlock device (IID), and mandatory alcohol/drug assessment and driver safety plan. Third Offense OWI (§ 346.65(2)(am)3): Misdemeanor. Jail time of 45 days to 1 year, fine of $600 to $2,000, license revocation of 2 to 3 years, and mandatory IID. Fourth Offense OWI (§ 346.65(2)(am)4): Class H felony. Imprisonment of 60 days to 6 years, fine up to $10,000, license revocation of 2 to 3 years, and mandatory IID. Fifth and Sixth Offense OWI (§ 346.65(2)(am)5): Class G felony. Imprisonment of 6 months to 10 years, fine up to $25,000, and license revocation of 2 to 3 years. Seventh, Eighth, or Ninth Offense OWI (§ 346.65(2)(am)6): Class F felony. Imprisonment of 3 years to 12.5 years, fine up to $25,000. Tenth or Subsequent Offense OWI (§ 346.65(2)(am)7): Class E felony. Imprisonment of 4 years to 15 years, fine up to $50,000. OWI Causing Injury (§ 346.63(2)(a)): Class F felony, carrying up to 12.5 years in prison and $25,000 fine. OWI Causing Death (§ 940.09): Class D felony (homicide by intoxicated use of a vehicle), carrying up to 25 years in prison and $100,000 fine. Implied Consent (§ 343.305): Wisconsin's implied consent law requires drivers to submit to chemical testing when lawfully requested. Refusal results in automatic 1-year license revocation (first offense) or 2 to 3 years (subsequent offenses). Ignition Interlock Device: Mandatory for all repeat OWI offenders and for first offenders with a BAC of 0.15% or higher.

Wisconsin has taken significant steps to expand access to naloxone (brand name Narcan), the opioid overdose reversal medication, through legislation and public health initiatives. Statewide Standing Order: Wisconsin has a statewide naloxone standing order issued by the state health officer that allows pharmacists to dispense naloxone without a patient-specific prescription. Under this standing order, any person at risk of an opioid overdose — or any person in a position to assist someone at risk — can obtain naloxone directly from a participating pharmacy. Pharmacist Authority (Wis. Stat. § 450.11): Wisconsin law authorizes pharmacists to deliver an opioid antagonist (naloxone) in accordance with a standing order from an authorized prescriber (physician, advanced practice nurse prescriber, or physician assistant). Pharmacists acting in good faith under these orders are immune from criminal and civil liability and may not be subject to professional discipline. Prescriber Authority: Any authorized prescriber (physician, physician assistant, advanced practice nurse prescriber) may prescribe naloxone to individuals at risk of opioid overdose, their family members, or other persons in a position to assist during an overdose. Layperson Administration Immunity: Individuals who administer naloxone in good faith to a person experiencing a suspected opioid overdose are protected from civil liability under Wisconsin law. Community Distribution Programs: The Wisconsin Department of Health Services (DHS) operates programs to distribute naloxone through community organizations, harm reduction programs, law enforcement agencies, and correctional facilities. Wisconsin's DOSE (Dispatch Outreach Services and Engagement) program provides naloxone and connects overdose survivors with treatment resources. Over-the-Counter Availability: Following the FDA's 2023 approval of over-the-counter naloxone (Narcan nasal spray), naloxone is available without a prescription at pharmacies throughout Wisconsin. ForwardHealth (Wisconsin Medicaid) covers naloxone for eligible individuals.

Wisconsin operates an extensive network of treatment courts and diversion programs funded through the Treatment Alternatives and Diversion (TAD) program, established under Wis. Stat. § 165.955. Program Scope: As of 2025, the TAD grant funds 61 treatment courts and 30 diversion programs across Wisconsin. These programs are administered by the Wisconsin Department of Justice (DOJ) in partnership with the Department of Corrections, Department of Health Services, Director of State Courts Office, and the Wisconsin State Public Defender's Office. Eligibility: TAD-funded programs serve non-violent, justice-involved adults for whom substance use disorders or mental health conditions were contributing factors in their criminal behavior. Participants typically face drug possession charges, OWI charges, or other non-violent offenses linked to substance use. Program Structure: Wisconsin treatment courts follow a multi-phase structure that includes:

• Substance use disorder treatment (outpatient, intensive outpatient, or residential)
• Mental health services and cognitive behavioral therapy
• Regular drug and alcohol testing
• Case management services
• Court appearances before the treatment court judge
• Graduated sanctions and incentives

Outcomes: Successful completion of a treatment court program may result in reduction or dismissal of charges, depending on the specific program and county. Participants who fail to comply with program requirements may be terminated and returned to traditional criminal prosecution. Funding: The TAD program was established by 2005 Wisconsin Act 25. Funding comes through state appropriations, with additional support from federal grants. The program has been expanded in successive state budgets, reflecting bipartisan support for treatment-based alternatives to incarceration. County-Specific Programs: Major counties including Milwaukee, Dane (Madison), Waukesha, Brown (Green Bay), and Outagamie (Appleton) operate treatment courts. Each program is tailored to the needs of the local community and may focus on specific populations (e.g., veterans, OWI offenders, or individuals with co-occurring mental health and substance use disorders).

Wisconsin generally does not impose statutory mandatory minimum sentences for drug possession offenses. However, several provisions create mandatory minimum penalties or sentencing enhancements for specific drug-related offenses. Repeat Offender Enhancement (§ 961.48): If a person has a prior conviction for a drug offense under Chapter 961, the maximum term of imprisonment for a subsequent offense may be doubled. While this is a maximum enhancement rather than a mandatory minimum, it significantly increases potential sentences for repeat offenders. Drug-Free Zone Enhancement (§ 961.49): Distribution, delivery, or manufacturing of controlled substances within 1,000 feet of a school, park, pool, youth center, community center, or school bus triggers an additional mandatory term of 5 years of imprisonment added to the underlying sentence. This enhancement is mandatory and cannot be waived by the court. Distribution to Minors (§ 961.46): Distributing a controlled substance to a person under age 18, or using a person under 18 to manufacture or deliver drugs, doubles the maximum authorized term of imprisonment. OWI Mandatory Minimums (§ 346.65):

• Second offense: Minimum 5 days in jail
• Third offense: Minimum 45 days in jail
• Fourth offense (Class H felony): Minimum 60 days in jail
• Fifth/sixth offense (Class G felony): Minimum 6 months in prison
• Seventh through ninth offense (Class F felony): Minimum 3 years in prison
• Tenth or subsequent offense (Class E felony): Minimum 4 years in prison

Notable Absence: Unlike the federal system and many other states, Wisconsin does not impose mandatory minimum sentences for simple drug possession. Judges retain discretion in sentencing within the felony classification ranges established by Wis. Stat. § 939.50. However, the felony classifications themselves set high maximum penalties even for first-offense possession (up to 3.5 years for a Class I felony).

Wisconsin offers several treatment-based alternatives to incarceration for individuals charged with drug offenses: Treatment Alternatives and Diversion (TAD) Program (§ 165.955): Wisconsin's primary treatment-based alternative, TAD funds 61 treatment courts and 30 diversion programs statewide. Non-violent offenders with substance use disorders can participate in structured programs that include treatment, drug testing, case management, and judicial supervision. Successful completion may result in charge reduction or dismissal. Deferred Prosecution Agreements: In many Wisconsin counties, district attorneys may offer deferred prosecution agreements (DPAs) to first-time or non-violent drug offenders. Under a DPA, the defendant agrees to complete specific conditions — such as substance abuse treatment, community service, and regular drug testing — over a set period. Upon successful completion, charges are dismissed. Substance Abuse Treatment as a Condition of Probation: Courts may order substance abuse evaluations and treatment as conditions of probation for individuals convicted of drug offenses. Treatment may include outpatient counseling, intensive outpatient programs (IOP), residential treatment, or medication-assisted treatment (MAT) using buprenorphine (Suboxone) or methadone. OWI Treatment Courts: Several counties operate specialized OWI treatment courts for repeat offenders, providing intensive substance abuse treatment as an alternative to extended incarceration. These programs emphasize accountability, behavioral change, and long-term recovery. Veterans Treatment Courts: Wisconsin operates veterans treatment courts in several counties for military veterans whose substance use disorders contributed to criminal behavior. These courts connect participants with VA services, mental health treatment, and veteran-specific support programs. Medication-Assisted Treatment (MAT) in Corrections: The Wisconsin Department of Corrections has expanded access to MAT programs within correctional facilities and as part of community supervision, including methadone, buprenorphine, and naltrexone (Vivitrol) treatment for opioid use disorder. Wisconsin Department of Health Services — Substance Abuse Treatment: The state funds a network of licensed substance abuse treatment providers through DHS, offering a continuum of care including crisis intervention, detoxification, residential treatment, outpatient services, and recovery support. BadgerCare Plus (Wisconsin Medicaid) covers substance use disorder treatment for eligible individuals.

2025 — Medical Cannabis Legislation Proposed: Wisconsin Republican legislators introduced a medical cannabis bill in 2025 that would establish a state-regulated medical marijuana program with licensed growers, processors, labs, and dispensaries. Qualifying conditions would include cancer, epilepsy, glaucoma, severe chronic pain, Parkinson's disease, multiple sclerosis, inflammatory bowel disease, and terminal illness. Separate proposals for recreational cannabis have also been introduced. As of early 2025, no legislation has been enacted. 2025 — Synthetic Cannabinoid Restrictions Proposed: Legislators proposed new measures to limit or ban synthetic and intoxicating cannabinoids, including bills that would redefine THC to include all intoxicating derivatives and impose stricter labeling, testing, and age restrictions on hemp-derived products. 2024-2025 — Local Decriminalization Expansion: Several Wisconsin municipalities continued to adopt or strengthen local ordinances reducing marijuana possession penalties to civil violations. La Crosse County reduced marijuana possession penalties to a $1 fine in 2025. These local measures do not override state law but reflect growing public support for reform. 2022 — 2021 Wisconsin Act 173 (Substance Abuse Prevention): This act expanded funding for substance abuse prevention and treatment programs, including additional support for the TAD program and community-based treatment initiatives. 2017 — Good Samaritan Law Expansion: Wisconsin expanded its Good Samaritan overdose law (§ 961.443) to provide immunity protections for individuals on probation, parole, or extended supervision who call 911 during an overdose. Ongoing — Fentanyl Response: Wisconsin has increased law enforcement and public health responses to the fentanyl crisis, including expanded naloxone distribution through the DHS DOSE program, increased funding for drug interdiction, and community awareness campaigns. Multiple proposals for enhanced fentanyl-specific penalties have been discussed but no separate fentanyl penalty tier has been enacted at the state level as of early 2025.