DW and WW Practice Exams

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We have made some of our most requested study tools and templates available for your convenience.

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DRINKING WATER PRACTICE EXAMS

Basic Math
Distribution Class I
Distribution II
Distribution III
Distribution IV
Very Small Water System Study Guide and Practice Exam
Sample Test Questions
References and Correct Answers
Water Treatment Class I

Water Treatment Class II
Water Treatment Class III
Water Treatment Class IV

WASTEWATER PRACTICE EXAMS

Land App Practice Exam 

Land App Practice Exam Answers

Wastewater Formulas
Wastewater Practice Tests – All Licenses

Wastewater Collection Level IV

For more information, review the Water Treatment Operator Need-to-Know Criteria

Need-to-Know Criteria outline the content that will be covered on WPI’s standardized examinations provided through ABC Testing, a WPI service.

• Standardized Water Treatment Operator Class I
• Standardized Water Treatment Operator Class II
• Standardized Water Treatment Operator Class III
• Standardized Water Treatment Operator Class IV

WASTEWATER TREATMENT OPERATOR NEED-TO-KNOW CRITERIA

Need-to-Know Criteria outline the content that will be covered on WPI’s standardized examinations provided through ABC Testing, a WPI service.

• Wastewater Treatment Operator Class I
• Wastewater Treatment Operator Class II
• Wastewater Treatment Operator Class III
• Wastewater Treatment Operator Class IV

Wastewater Treatment Operator Formula/Conversion Table

WPI standardized exams are administered with a Formula/Conversion Table containing mathematical formulas and common abbreviations that may be present on the exam.

• Wastewater Treatment Operator Formula/Conversion Table