Water Supply Operations (WSO) Water Distribution, Grades I, II, III & IV

AWWA’s Water Supply Operations (WSO) series is the leading operator certification training, aligned with current Association of Boards of Certification (ABC) Need-to-Know criteria and offering training based on experience and certification level.

The WSO Water Treatment Series includes both WSO Water Distribution Books: Grades I & II and Grades III & IV.

To reinforce learning, the books includes full-color illustrations and links to video clips, as well as questions at the end of each chapter.