Alcohol and chemical testing

Testing machine

​​​Alcohol and chemical testing supports the prosecution of drunk drivers thro​ugh the provision of a systematic and standardized method of measuring the breath alcohol content of impaired motorists.

The program maintains and certifies evidential breath alcohol testing instruments, trains and certifies instrument operators and provides expert testimony in court on breath alcohol and instrumentation issues. The program is also responsible for the approval of preliminary breath testing devices (PBTs), PBT operator certification and approval of ignition interlock devices.

Basic Breath Examiner Specialist Training

The Chemical Testing Section’s Basic Breath Examiner Specialist Training is required for local law enforcement officers seeking to perform alcohol testing using the Intoximeter EC/IR II and preliminary breath test devices (PBTs). Upon completion of the 3-day course, successful applicants will be issued permits to conduct both evidential and preliminary breath alcohol tests.

Dates Location Facility
Jan. 10-12Waukesha

Waukesha County Technical College - W Building

800 Main Street, Pewaukee, WI 53072

Feb. 7-9Madison

Chemical Testing Section Office

3502 Kinsman Boulevard, Madison, WI 53704

Feb. 21-23Juneau

Dodge County Sheriff Department

124 West St, Juneau, WI 53039​

Mar. 7-9Franklin

Milwaukee County Sheriff’s Academy

9225 S. 68th Street, Franklin, WI 53132

Mar. 14-16Franklin

Milwaukee County Sheriff’s Academy

9225 S. 68th Street, Franklin, WI 53132

Mar. 21-23Rice Lake

Northwood Technical College - Rice Lake Campus

1900 College Drive, Rice Lake, WI 54868

Apr. 25-27Rhinelander

Nicolet College - Northwoods Center

5364 College Drive, Rhinelander, WI 54501​

May 23-25Neillsville

Chippewa Valley Technical College - Neillsville

11 Tiff Ave, Neillsville​, WI 54456​

Jun. 13-15Oshkosh

Culver Family Welcome Center - UW-Oshkosh

625 Pearl Ave, Oshkosh, WI 54901

Jun. 27-29Wausau

Northcentral Technical College

1000 W. Campus Dr, Wausau, WI 54401​

Jul. 11-13Waukesha

Waukesha County Technical College - W Building

800 Main Street, Pewaukee, WI 53072​

Jul. 25-27River Falls

Chippewa Valley Technical College

500 S. Wasson Lane, River Falls, WI 54022​

Aug. 8-10Kenosha

UW-Parkside - Tallent Hall

900 Wood Road, Kenosha, WI 53141

Aug. 22-24La Crosse

La Crosse Center

300 S. Front Street, La Crosse, WI 54601

Sep. 12-14Superior

Northcentral Technical College

1000 W. Campus Dr, Wausau, WI 54401​

Sep. 26-28Milwaukee

Milwaukee Police Training Academy

6680 N Teutonia Ave, Milwaukee, WI 53209​

Oct. 3-5Milwaukee

Milwaukee Police Training Academy

6680 N Teutonia Ave, Milwaukee, WI 53209

Nov. 7-9Madison

Chemical Testing Section Office

3502 Kinsman Boulevard, Madison, WI 53704

Nov. 14-16Madison

Chemical Testing Section Office

3502 Kinsman Boulevard, Madison, WI 53704

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This schedule is subject to change. ​Updates will be posted on this page and any affected agencies will be notified.

All applicants must be employed in police work and have department approval to attend. A completed application is required for each student.

2023 training announcement

2023 application

All sessions are filled in the order applications are received. Agencies will receive an email confirmation after applications have been processed. Confirmation letters will be emailed approximately 2 weeks before scheduled training. Questions about the application process can be directed to the Chemical Test Section at chemtest@dot.wi.gov.

A wait list will be established when session reaches capacity. Applications will be accepted for wait list and will be accommodated in order received. Contact the Chemical Testing Section for additional information.

Specialized Training

The Chemical Testing Section also provides training for evidential recertification (required every two years), preliminary breath testing, and calibration of PBTs.

Contact the Chemical Testing Section at chemtest@dot.wi.gov ​for more information about these training opportunities.

Installation of a breath alcohol ignition interlock device (BAIID)

Wisconsin courts are required to order a BAIID to be installed on every vehicle owned by the offender for first offense OWI with an alcohol concentration of 0.15 or higher, for all second or subsequent OWI offense and for chemical test refusal, unless doing so ​would cause an undue financial hardship.

BAIIDs are leased from a service provider for the duration of the vehicle sanction, a minimum of 12 months. The lease​ and service agreement includes fees for installation, monthly service, and removal at the conclusion of the sanction. Other fees may be assessed by the service provider for periodic calibration, violation resets, or permanent lockout conditions.

There are currently five BAIID models certified for use in Wisconsin. Additional information about each is available on the manufacturer’s websites:

In 2021, WisDOT started to make significant changes to the BAIID program, including incorporating cameras and on-line data access for authorized users, making additional users costs available on this website, allowing handset removal, the use of lockout codes, and elimination of temporary lockouts at vehicle start. These updates will be required for all BAIIDs installed after January 1, 2023, and for users with removal dates in 2024 and later. The department will be working with the manufacturers to identify and schedule these swaps, which will occur at no cost to users.

The service center list has been separated into 9 regions, which are then sorted by county and city.


BAIID region map

​The monthly lease for devices installed before January 2023 is listed as “No Camera”. Installation and removal charges will depend on the vehicle’s ignition (keyless systems, which are more complex, require additional time to install). Insurance is an option offered by most manufacturers, and the new rule requires publication of replacement costs. Each manufacturer and service center must provide a clear summary of all fees at the time of installation.

​IID contacts

For assistance or additional information about driver licensing and vehicle registration, contact WisDOT Division of Motor Vehicles, Driver Information Section at (608) 266-2261 or via web-based form.

For all other IID topics, the service center list incudes phone numbers and website links.​