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.

ABC Standardized Water Treatment Operator Need-to-Know

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

ABC Standardized Water Distribution Operator Need-to-Know

ABC Standardized Water Distribution Operator Class I
ABC Standardized Water Distribution Operator Class II
ABC Standardized Water Distribution Operator Class III
ABC Standardized Water Distribution Operator Class IV

ABC Standardized Wastewater Collection Operator Need-to-Know

ABC Standardized Water Collection Operator Class I
ABC Standardized Water Collection Operator Class II
ABC Standardized Water Collection Operator Class III
ABC Standardized Water Collection Operator Class IV

ABC Standardized Wastewater Treatment Operator Need-to-Know

ABC Standardized Water Treatment Operator Class I
ABC Standardized Water Treatment Operator Class II
ABC Standardized Water Treatment Operator Class III
ABC Standardized Water Treatment Operator Class VI