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The license information below is specific to the state of Minnesota.
Water and Wastewater Treatment Plant Operators
Varies from a minimum of one year to eight years of experience Part of the experience may be substituted with education Exams are given for Class A Class B Class C and Class D facilities and for a type S collection system wastewater certificate
Minnesota Pollution Control Agency
MPCA
Phone: (651) 296-6300
Data is collected by the Department of Employment and Economic Development.