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Illinois Boating Under the Influence (BUI) (2026)

Conditional: Illinois (625 ILCS 45/5-16) considers a person to be operating a vessel under the influence at a blood or breath alcohol concentration of 0.08% or more.

ConditionalVerified Jul 7, 2026

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Official source: dnr.illinois.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Boating Under the Influence (BUI) in states bordering Illinois

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

IndianaConditional
Indiana prosecutes boating under the influence under its operating-while-intoxicated statutes (0.08% BAC); state law includes a watercraft within the definition of vehicle for OWI.
Verified Jul 7, 2026 · Source: legislativeupdate.courts.in.gov · Full Indiana rule →
IowaConditional
Iowa Code 462A.14 makes operating a motorboat or sailboat with an alcohol concentration of 0.08 or more a crime.
Verified Jul 7, 2026 · Source: legis.iowa.gov · Full Iowa rule →
KentuckyConditional
Kentucky considers a boat operator intoxicated if the concentration of alcohol in the blood is 0.08% or more (Dept. of Fish & Wildlife).
Verified Jul 7, 2026 · Source: fw.ky.gov · Full Kentucky rule →
MissouriConditional
Missouri makes it an offense to operate a vessel with 0.08% or more by weight of alcohol in the blood (boating with excessive blood alcohol content, RSMo 577.014).
Verified Jul 7, 2026 · Source: revisor.mo.gov · Full Missouri rule →
WisconsinConditional
Wisconsin (Wis. Stat. 30.681) prohibits operating a motorboat with an alcohol concentration of 0.08 or more.
Verified Jul 7, 2026 · Source: docs.legis.wisconsin.gov · Full Wisconsin rule →

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