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Indiana Department of Environmental Management

IDEM > Compliance > Water Compliance > Wastewater Operator Certification & Continuing Education > Wastewater Certification Information > Indiana Wastewater Operator Certification Process > Study Guides for the Wastewater Operator Certification Examinations Study Guides for the Wastewater Operator Certification Examinations

Start Here: List of Study References for the Exams

In an effort to streamline the certification exam process IDEM has combined all necessary formulas to one Formula Sheet [DOC]. It will be provided for your use during the exam. Any of these formulas may be used on any classification of exam. Mathematics will still represent approximately ten percent of each exam. You will have to choose the appropriate formula and utilize it to calculate the correct answer for each math question.

Classes I & A

Class II

Classes III & IV

Class B

Classes C & D