Courtesy Decontamination

DNR employee spraying a boat at a courtesy decontamination siteGenerally in operation from fishing opener to early October, boaters can have courtesy decontaminations done at dozens of locations around the state. The decontamination units and DNR-authorized watercraft inspectors can help you comply with invasive species laws and reduce the risk of spreading aquatic invasive species.

Watercraft decontamination consists of a hot water rinse and, on occasion, a high-pressure spray to remove aquatic invasive species. There are no soaps, bleaches, or chemicals used or recommended at this time. At 140°F, a hot water rinse for 10 seconds to each spot will kill zebra mussels. At 120°F, a contact time of 2 minutes is needed to kill zebra mussels. DNR-authorized watercraft inspectors will adjust temperature and exposure times based on the equipment being decontaminated. 

The map shows some scheduled decontamination locations. The calendar feature searches availability on specific days. Additional dates will be added as the season progresses. If you are unable to find a convenient decontamination location, please contact your local regional watercraft inspection supervisor for alternatives.

View Courtesy Decontamination Map »

Courtesy Decontaminations: What to expect

  • The crew will be working at an open public water access.
  • Watercraft entering and exiting the water will have priority. You may have to wait.
  • Inform the inspector that you are there for a courtesy decontamination.

Before your visit

  • Call the contact person listed for the site to confirm the unit is present.
  • Arrive at least 30 minutes prior to the posted end time.
  • If you are traveling with prohibited invasive species attached to your watercraft (such as zebra mussels) please print out and complete a permit before traveling.

Questions and Feedback

wip.dnr@state.mn.us

Watercraft Inspection Program Contacts

Tina Fitzgerald
Watercraft Inspection Program Supervisor
651-259-5146
tina.fitzgerald@state.mn.us

Mike Bolinski
Region 1 Watercraft Inspection Supervisor
218-770-1451
michael.bolinski@state.mn.us

Jessamyn Foley
Region 2 Watercraft Inspection Supervisor
218-232-8955
jessamyn.foley@state.mn.us

Christine Hokkala-Kuhns
Region 3 Watercraft Inspection Supervisor
320-223-7845
christine.hokkala-kuhns@state.mn.us

Travis Kinsell
Region 4 Watercraft Inspection Supervisor
320-247-0387
travis.kinsell@state.mn.us

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