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Boating Under the Influence in Illinois

How Illinois law treats boating under the influence (bui): what is illegal, whether it is a misdemeanor or felony, and the penalties, from the state code.

Short answer: Operating or being in actual physical control of a watercraft at the driving alcohol limit (0.08 or more), while under the influence of alcohol, drugs or intoxicating compounds, or at the driving limit for THC is prohibited. 625 ILCS 45/5-16(A)(1), (A)(3), (A)(4), (A)(5), (A)(5.1); 625 ILCS 5/11-501(a)(1); 730 ILCS 5/5-4.5-25 to -65

Boating under the influence (BUI)Operating or being in actual physical control of a watercraft at the driving alcohol limit (0.08 or more), while under the influence of alcohol, drugs or intoxicating compounds, or at the driving limit for THC is prohibited. A first offense is a Class A misdemeanor (under 1 year; fine up to $2,500). It is a Class 4 felony with a prior conviction under this law, when operating while boating privileges are suspended or revoked for such an offense, or when it causes great bodily harm or permanent disability or disfigurement (1 to 12 years if prison is imposed for the injury case). Causing a death is a Class 2 felony with 3 to 14 years if prison is imposed. Having a child under 16 aboard brings a mandatory minimum $500 fine and 5 days of community service, and refusing or failing chemical testing can lead to suspension of watercraft operating privileges.
0.08 limit incorporated from the Vehicle Code: https://www.ilga.gov/Documents/legislation/ilcs/documents/062500050K11-501.htm . Class 1 felony 4 to 15 years; Class 2 felony 3 to 7 years; Class 3 felony 2 to 5 years; Class 4 felony 1 to 3 years; felony fines up to $25,000; Class A misdemeanor less than 1 year and up to $2,500; Class B misdemeanor up to 6 months and $1,500; Class C misdemeanor up to 30 days and $1,500. Read on ilga.gov in the browser 2026-10-27.

More Illinois criminal law

FAQ

What is the penalty for boating under the influence in Illinois?
Operating or being in actual physical control of a watercraft at the driving alcohol limit (0.08 or more), while under the influence of alcohol, drugs or intoxicating compounds, or at the driving limit for THC is prohibited. A first offense is a Class A misdemeanor (under 1 year; fine up to $2,500). It is a Class 4 felony with a prior conviction under this law, when operating while boating privileges are suspended or revoked for such an offense, or when it causes great bodily harm or permanent disability or disfigurement (1 to 12 years if prison is imposed for the injury case). Causing a death is a Class 2 felony with 3 to 14 years if prison is imposed. Having a child under 16 aboard brings a mandatory minimum $500 fine and 5 days of community service, and refusing or failing chemical testing can lead to suspension of watercraft operating privileges.
Can I get a court-appointed lawyer for boating under the influence (bui) in Illinois?
Illinois's rule on court-appointed lawyers: Under Illinois Supreme Court Rule 401(a), an indigent defendant has the right to appointed counsel whenever the charge is punishable by imprisonment. The trial judge appoints the county Office of the Public Defender, which assigns the individual assistant public defender. Whether a person is indigent is left to the trial court's discretion based on as complete a financial picture as possible; a person need not be entirely without funds to be found indigent, and a court may not refuse appointment solely because the defendant posted bail. The Office of the State Appellate Defender handles appeals for indigent defendants. Ill. S. Ct. R. 401(a); People v. Campbell, 224 Ill. 2d 80 (2007); Burnette v. Terrell, 232 Ill. 2d 522 (2009); People v. Ellis, 309 Ill. App. 3d 443 (1999); People ex rel. Baker v. Power, 60 Ill. 2d 151 (1975)
How much does a lawyer for boating under the influence (bui) cost in Illinois?
Lawyers set their own fees, and Illinois has rules on how they may charge. See hiring a criminal defense lawyer in Illinois for fee rules, how to check a lawyer's license and free help.
What happens after an arrest for boating under the influence (bui) in Illinois?
How release before trial works in Illinois: Illinois abolished cash (monetary) bail under the Pretrial Fairness Act (part of the SAFE-T Act); cash bail ended in Illinois courts on September 18, 2023, after the Illinois Supreme Court upheld the law in Rowe v. Raoul, 2023 IL 129248. The default is pretrial release on personal recognizance, with conditions. The State may seek detention only in specified cases by filing a petition; at the first detention hearing the State must prove by clear and convincing evidence that the proof is evident or the presumption great that the defendant committed a detainable offense, that the defendant poses a real and present threat to any person or the community or a high likelihood of willful flight, and that no conditions could mitigate that threat or risk. The court must revisit continued detention at later hearings. 725 ILCS 5/110-6.1 (P.A. 101-652, 102-1104); Rowe v. Raoul, 2023 IL 129248 What happens after an arrest.
Can a conviction for boating under the influence (bui) be removed from my record in Illinois?
Each state sets its own rules for sealing or expunging records. See Illinois expungement and record sealing rules.

General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.