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Operator certification program

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2025 In-Person Paper Exam: 

The Operator Certification program will be hosting in-person exam sessions in 2025. Exams will be held throughout the state approximately four times a month for four months of the year. All 2025 exam dates and locations, information about the in-person paper exams, and updated exam application forms can be found on the Operator Certification Exams Page.

About the program

The program is responsible for ensuring that various types of professional operators have adequate training to perform the necessary tasks at their facilities or businesses. Review certification and licensing requirements by selecting the appropriate link.

Operator certification lookup website

Operator certification lookup

Do you need to

  • View an operator's training history report?
  • Print a wallet card?
  • See which certifications an operator holds?

Operator certification

Madison Wastewater Treatment Plant
Madison Wastewater Treatment Plant
Photo credit: Danielle Luke, Wisconsin DNR

Business licensing

Wisconsin administrative codes

The following Wisconsin administrative codes establish and are implemented by the Operator Certification Program.