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Iowa DUI / DWI Limits (2026)

Info: In Iowa the OWI limit for drivers 21 and older is 0.08% blood alcohol (Iowa Code 321J.2), and the limit for drivers under 21 is 0.02%.

InfoVerified May 31, 2026

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Official source: legis.iowa.gov →

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

DUI / DWI Limits in states bordering Iowa

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

IllinoisInfo
In Illinois the DUI limit for drivers 21 and older is 0.08% blood alcohol, and drivers under 21 are held to a zero-tolerance limit of 0.02% — any trace can trigger license action.
Verified May 31, 2026 · Source: ilga.gov · Full Illinois rule →
MinnesotaInfo
In Minnesota the adult per se limit for DWI is 0.08% blood alcohol, an aggravated or enhanced offense applies at 0.16% or higher, the under-21 zero-tolerance rule prohibits any consumption or measurable alcohol, and commercial drivers are limited to 0.04%.
Verified May 31, 2026 · Source: dps.mn.gov · Full Minnesota rule →
MissouriInfo
In Missouri the adult DWI limit is 0.08% blood alcohol, and drivers under 21 are held to the "abuse and lose" zero-tolerance limit of 0.02%.
Verified May 31, 2026 · Source: modot.org · Full Missouri rule →
NebraskaInfo
In Nebraska the adult DUI limit is 0.08% blood alcohol, and drivers under 21 are held to a zero-tolerance limit of 0.02%.
Verified May 31, 2026 · Source: nebraskalegislature.gov · Full Nebraska rule →
South DakotaInfo
In South Dakota the per se limit for adults is 0.08% blood alcohol, and drivers under 21 are held to a zero-tolerance limit of 0.02%.
Verified May 31, 2026 · Source: sdlegislature.gov · Full South Dakota rule →
WisconsinInfo
In Wisconsin the limit for adults is 0.08% blood alcohol (per se / "PAC") for OWI, and drivers under 21 are under the "Absolute Sobriety" zero-tolerance rule at 0.00%.
Verified May 31, 2026 · Source: revenue.wi.gov · Full Wisconsin rule →

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