Water Treatment Operator Class IV Practice Questions - ABC WPI Water Treatment Operator Class IV Certification Exam

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Which agency issues the ABC/WPI Water Treatment Operator Class IV standardized exam used by most state drinking water programs?

Water Professionals International (WPI), formerly the Association of Boards of Certification (ABC) U.S. Environmental Protection Agency (EPA) American Water Works Association (AWWA) National Sanitation Foundation (NSF International)

Correct Answer:

Water Professionals International (WPI), formerly the Association of Boards of Certification (ABC)

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