MO Water Wastewater Operator Practice Questions - Missouri Water And Wastewater Operator Certification Exam

Missouri classifies drinking water treatment operators into which certification levels?

Class I, II, III, and IV Levels A, B, C, and D with A being highest Grade 1 through Grade 5 Entry, Intermediate, Advanced, and Expert

Correct Answer:

Levels A, B, C, and D with A being highest

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