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Study materials to help you succeed.
The Need-to-Know Criteria provide the exam specifications and job tasks covered on the ABC standardized exams.
Please contact the certifying authority for your state, province, or geopolitical region to determine which exam preparation materials are appropriate for your jurisdiction and exam date.
The following ABC Need-to-Know Criteria are available in PDF format by selecting the links below. Need-to-Know Criteria may be reproduced with written permission from ABC.
Backflow Prevention Assembly Tester
Biosolids Land Applier
Industrial Waste Operator
Plant Maintenance Technologist
Very Small Water System Operator
Small Wastewater System Operator
Wastewater Collection Operator
- 2017 Edition Class I Wastewater Collection Operator Need-to-Know Criteria
- 2017 Edition Class II Wastewater Collection Operator Need-to-Know Criteria
- 2017 Edition Class III Wastewater Collection Operator Need-to-Know Criteria
- 2017 Edition Class IV Wastewater Collection Operator Need-to-Know Criteria
- 2012 Edition Wastewater Collection Operator Need-to-Know Criteria
- 2008 Edition Wastewater Collection Operator Need-to-Know Criteria
Wastewater Laboratory Analyst
Wastewater Treatment Operator
- 2017 Edition Class I Wastewater Treatment Operator Need-to-Know Criteria
- 2017 Edition Class II Wastewater Treatment Operator Need-to-Know Criteria
- 2017 Edition Class III Wastewater Treatment Operator Need-to-Know Criteria
- 2017 Edition Class IV Wastewater Treatment Operator Need-to-Know Criteria
- 2012 Edition Wastewater Treatment Operator Need-to-Know Criteria
- 2008 Edition Wastewater Treatment Operator Need-to-Know Criteria
Water Distribution Operator
- 2017 Edition Class I Water Distribution Operator Need-to-Know Criteria
- 2017 Edition Class II Water Distribution Operator Need-to-Know Criteria
- 2017 Edition Class III Water Distribution Operator Need-to-Know Criteria
- 2017 Edition Class IV Water Distribution Operator Need-to-Know Criteria
- 2012 Edition Distribution Operator Need-to-Know Criteria
- 2009 Edition Distribution Operator Need-to-Know Criteria
Water Laboratory Analyst
Water Treatment Operator
- 2017 Edition Class I Water Treatment Operator Need-to-Know Criteria
- 2017 Edition Class II Water Treatment Operator Need-to-Know Criteria
- 2017 Edition Class III Water Treatment Operator Need-to-Know Criteria
- 2017 Edition Class IV Water Treatment Operator Need-to-Know Criteria
- 2012 Edition Water Treatment Operator Need-to-Know Criteria
- 2007 Edition Water Treatment Operator Need-to-Know Criteria