An OWI arrest in Muskego starts two clocks running at the same time. One is on your driver’s license. If you refused the test, you generally have just 10 days from your Notice of Intent to Revoke to request a refusal hearing; if you took the test and failed it, you have 10 days from your Notice of Intent to Suspend to request administrative review. Miss either window and the license consequence takes effect on its own — the administrative suspension begins 30 days after the Notice of Intent to Suspend is issued. The second clock runs on your case in court. Mays Law Office defends OWI charges — the offense most people search as DUI or DWI, though Wisconsin’s statutory charge is OWI — along with drugged-driving allegations, throughout Muskego and Waukesha County. Mays Law Office represents clients across Wisconsin from our office in Middleton — including Muskego and Waukesha County. Call 608-305-4518 for a free consultation before you say anything to anyone else about your arrest.

OWI Attorneys in Muskego, WI

Attorney Stephen E. Mays has practiced law in Wisconsin since 1995 and was named a 2025 Wisconsin Super Lawyer in DUI/DWI defense. He belongs to the National Association of Criminal Defense Lawyers, the Wisconsin Association of Criminal Defense Lawyers, the Dane County Criminal Defense Lawyers Association, and the State Bar of Wisconsin. Muskego sits in the western tier of the Milwaukee metropolitan area, a Waukesha County suburb where a night out often means a drive home on a state or county highway — and where the agency that makes the stop can be city police, the county sheriff, or the State Patrol. Knowing which agency stopped you, and where the charge will land, shapes the defense from the first day.

An OWI lawyer earns their fee in the specifics — whether the stop was lawful, whether the field sobriety tests actually show what the officer claims, whether the blood draw held up under the Fourth Amendment, and whether every deadline that protects your license was met. Those are the questions a case needs answered from the start.

When to Call Our Muskego, WI OWI Lawyers

Reach out right away if any of this fits your situation:

• You were handed a “Notice of Intent to Revoke” after refusing a breath or blood test. You have 10 days from that notice to request a refusal hearing in writing — let the window close and the revocation takes effect automatically, and you forfeit the statutory chance to contest it.
• You took the test and the result was over the limit. That triggers a Notice of Intent to Suspend, and you have 10 days from that notice to request administrative review — otherwise a 6-month administrative suspension begins 30 days after the notice is issued.
• You already have an OWI on your record. A second offense is generally a criminal misdemeanor carrying 5 days to 6 months in jail when the prior falls within the past 10 years. A third runs 45 days to a year. A fourth is a Class H felony.
• A child under 16 was riding with you. That one fact turns even a first offense into a criminal misdemeanor — a $350 to $1,100 fine and a mandatory 5 days to 6 months in jail.
• Someone was hurt. Causing injury to another person while intoxicated makes even a first offense a crime, and great bodily harm or death brings separate felony charges.
• You hold a CDL. A single OWI conviction — even in your own car — disqualifies your commercial privileges for a year, and a second lifetime conviction ends them for good.
• You were at 0.15 or above. On a first offense, that reading brings a mandatory one-year ignition interlock order.

What an OWI Conviction Costs in Wisconsin

Wisconsin writes its drunk-driving law under a single name — operating while intoxicated, or OWI. People search for DUI and DWI lawyers, but those are everyday labels for the same charge. What the charge costs you depends first on your history — and then on aggravating facts like a high BAC, a refusal, or a passenger under 16. A standard first offense is not a crime at all: it is a civil forfeiture of $150 to $300 plus a mandatory $435 surcharge, with no jail — but your license is revoked for six to nine months. A second offense becomes a criminal misdemeanor when the prior falls within the past ten years, carrying five days to six months in jail. At the third offense, the counting changes: every qualifying prior in your lifetime counts — including OWI convictions, implied-consent refusal revocations, OWI-related injury convictions, and comparable out-of-state offenses — and jail runs from 45 days up to a year. A fourth offense is a Class H felony punishable by 60 days to six years of imprisonment. Certain facts short-circuit that ladder entirely — a passenger under 16 turns even a first offense into a criminal misdemeanor with a $350-to-$1,100 fine and a mandatory five days to six months behind bars. An ignition interlock is required after a test refusal, a first offense at 0.15 or above, or any repeat offense. An occupational license may keep you driving to work, but eligibility is never automatic — it depends on the type of suspension, any interlock requirement, the rest of your record, and DMV approval. And whichever way your case starts, you generally have just 10 days from your notice to request a refusal hearing or administrative review.

The fine on the citation is the smallest number in an OWI case. Wisconsin adds a mandatory $435 surcharge to every OWI conviction, and the court-ordered alcohol and drug assessment typically runs $165 to $500 depending on the county. If an interlock is ordered, plan on roughly $50 to $150 for installation and $60 to $100 a month while the order lasts. Getting your license back costs another $200 reinstatement fee, and SR-22 high-risk insurance keeps raising the price for years afterward. Add it together and a typical first offense lands between $4,000 and well over $10,000 all-in. Those are typical ranges, not quotes — your county, your vendor, and your insurer set the real numbers.

How OWI Cases Move Through Waukesha County Courts

Where a Muskego OWI is heard depends on the charge and on the agency that wrote the citation. A standard civil first offense is not a crime, and it may be handled in a municipal court or in the circuit court depending on the citing agency — there is no single answer that fits every case. In municipal court, a first-offense OWI is a non-criminal matter, and the municipality must prove it by “clear, satisfactory and convincing” evidence — a middle standard, higher than the ordinary civil standard but short of the criminal one, under Wis. Stat. § 800.08(3).

Every criminal OWI — a repeat offense, or a first offense involving a minor passenger or injury — is filed in the Waukesha County Circuit Court and prosecuted by the county’s District Attorney. The Waukesha County Circuit Court sits at 515 W. Moreland Boulevard in Waukesha and runs a dozen branches, so a Muskego case is one of many moving through that courthouse. Which agency stopped you — city police, the county sheriff, or a State Patrol trooper working a nearby highway — can affect the reports, the video, and how the case is built, which is one of the first things our Wisconsin OWI defense practice sorts out.

The criminal track follows a set path. The arresting agency forwards its file to the District Attorney, who issues a criminal complaint; you make an initial appearance; contested issues get litigated at motion hearings; and if a pretrial conference produces no resolution, the case moves toward trial, where the State must prove guilt beyond a reasonable doubt.

How We Defend OWI Charges

An OWI prosecution is a chain of moving parts, and each part can fail. The first is the stop itself: an officer needs reasonable suspicion to pull you over and probable cause to arrest, and when either is missing, a court can suppress the evidence gathered afterward. The second is the roadside testing. The three standardized field sobriety tests were validated on narrow research populations, and age, weight, injuries, medical conditions, footwear, and the weather can all generate “clues” in a perfectly sober driver. The third is the chemical evidence. A breath number at or near the legal limit — 0.08 for most drivers, though stricter limits apply behind the wheel of a commercial vehicle (0.04), for drivers under 21 (absolute sobriety), and for drivers under an interlock order or with three or more priors (0.02) — is a measurement, not a verdict — the reliability of chemical testing is one of the recognized fronts for challenging an OWI, and once you submit to the agency’s primary test, Wisconsin law lets you request the agency’s alternative test free of charge — or arrange a test of your own choosing at your own expense. Blood draws raise a separate constitutional question: taking blood is a Fourth Amendment search, and in State v. Prado (2021) the Wisconsin Supreme Court struck down the implied-consent provision that presumed consent from an incapacitated driver. Not every warrantless draw gets suppressed — the State can point to exceptions like exigent circumstances — but a draw taken without a warrant and without valid consent deserves scrutiny in every case. Finally, the State must prove “operation” — the physical manipulation or activation of a vehicle’s controls necessary to put it in motion. That element is fact-specific, and facts can be contested. Which of these doors is open in your case depends on the reports, the video, and the timeline — call 608-305-4518 before those details go cold.

We also handle the license side of the case — refusal hearings and occupational license applications. An occupational license is not automatic; eligibility depends on the type of suspension, any interlock requirement, other suspensions on your record, and DMV approval, so the paperwork is worth getting right the first time.

Muskego OWI Questions We Hear Most

Will I go to jail for a first-offense OWI in Wisconsin?

For a standard first offense, no. Wisconsin is the only state that treats a first OWI as a non-criminal civil forfeiture — a fine and license revocation, but no jail. That changes fast if a child under 16 was in the car — a criminal misdemeanor with a mandatory 5 days to 6 months in jail — or if anyone else was injured, which also criminalizes the charge.

Where will my Muskego OWI case actually be heard?

That depends on the charge and on the agency that cited you. A standard civil first offense is a non-criminal matter that may be handled in a municipal court or in the circuit court, depending on the citing agency — so there is no single answer for every case. Any criminal OWI — a repeat offense, or a first offense with a minor passenger or injury — is filed in the Waukesha County Circuit Court at 515 W. Moreland Boulevard in Waukesha, which runs a dozen branches, and prosecuted there by the county District Attorney. Whether your stop came from Muskego police, the county sheriff, or a State Patrol trooper, sorting out which court applies is one of the first things we do.

Can I still drive to work?

Often, yes — but it is not automatic. An occupational license permits up to 12 hours of driving per day and 60 hours per week for work, school, medical appointments, treatment, and essential household duties — never recreation. Eligibility depends on the type of suspension or revocation, any interlock requirement, other suspensions on your record, and DMV approval — and the timing rules differ by situation, so we confirm your exact eligibility window before filing. The application runs through WisDOT paperwork, an SR-22 filing from your insurer, and proof of interlock installation where ordered — we can help prepare and review the application and supporting filings.

I have a CDL. What does an OWI do to my commercial license?

A first OWI conviction disqualifies your commercial driving privileges for 1 year — even if you were driving your personal vehicle at the time — and for 3 years if you were hauling placarded hazardous materials. A second lifetime OWI conviction means lifetime CDL disqualification. Commercial drivers also operate under a stricter 0.04 limit in a commercial vehicle, and any detectable alcohol triggers an immediate 24-hour out-of-service order.

I’m under 21. How does an OWI count against me later?

Wisconsin’s “absolute sobriety” law makes it illegal for a driver under 21 to drive with any alcohol concentration above 0.0, and a violation under that provision — Wis. Stat. § 346.63(2m) — is a non-criminal offense with its own forfeiture and suspension. Importantly, an under-21 absolute-sobriety violation is not a countable prior under Wisconsin’s OWI counting statute, § 343.307. That said, a driver under 21 whose alcohol concentration reaches 0.08 or higher faces the same adult OWI and PAC exposure as any other driver — so the “not a drop” ticket and a full OWI are two different things, and only one of them starts the counting clock.

Get a Free Consultation

Se Habla Español — Call 608-305-4518

Whether this is a civil first offense or a felony repeat charge, the days right after a Muskego OWI arrest are the ones that matter most. Call 608-305-4518 or contact Mays Law Office online for a free consultation. Mays Law Office, LLC — 6405 Century Ave STE 103, Middleton, WI 53562.