Need-to-Know Criteria

Testing Services

Study materials to help you succeed.

The Need-to-Know Criteria describe the core competencies covered on the Ohio EPA exams and list exam specifications as well as reference material that may be used to prepare for the Ohio EPA exam.

The following Need-to-Know Criteria are available in PDF format by selecting the links below.

Ohio EPA Collection

Ohio EPA Distribution

Ohio EPA Wastewater Treatment

Ohio EPA Wastewater Treatment Class A

Ohio EPA Water Supply

Ohio EPA Water Supply Class A