Business
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Training
Ch. NR 114, 499 and 524 Wis. Adm. Code require an operator to earn continuing education credits to maintain an active certification. These continuing education requirements are designed to help operators keep current on new requirements and…
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Small water system (OTM/NN) operator certification
Small water system operators work at an "other than municipal" (OTM) community water system or a non–transient non–community (NN) water system. OTM systems serve groups of 25 or more year-round residents; they can include mobile home parks,…
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Septage business license requirements
All septage businesses in the State of Wisconsin that service and/or dispose of septage (septic tanks, holding tanks, sanitary grease interceptors, portable restrooms, privies, etc.) shall be licensed pursuant to ch. NR 113, Wis. Adm. Code.…
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Septage servicing operator certification
All septage businesses in the State of Wisconsin must designate a master operator to serve as operator-in-charge (OIC). The OIC is directly responsible for the operation of the septage servicing business (reference: sub. NR 114.153(5), Wis. Adm…
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Operator certification program
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…
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Landfill operator certification
Chapter NR 524, Wisconsin Administrative Code was created as authorized by ss. 289.06, 289.42, and 227.11 (2), Wis. Stats., which contain the requirements for the department to develop a program of certification for persons participating in, or…
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Incinerator operator certification
Wisconsin Administrative Code ch. NR 499 was created as authorized by ss. 285.51, Wis. Stats., which establishes a program for the department to develop a program of certification for persons participating in, or responsible for, the operation of…
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Exams
Wisconsin DNR’s Operator Certification program will be hosting in-person paper exams coordinated and facilitated by Wisconsin DNR staff in 2025.Exams will be held approximately four times a month for four months of the year. All 2025 exam dates and…
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Laboratory services
The DNR receives laboratory data from many sources for environmental monitoring. This environmental monitoring is done for compliance with state and federal rules, investigating environmental problems, determining baseline quality, verifying cleanup…
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Laboratory certification & registration program
The Wisconsin Department of Natural Resources (DNR) Laboratory Certification Program was created in 1986 to help ensure that laboratories submit reliable and consistent data to the department's various environmental programs. The program currently…