scope:

Foreword

This book is part of the Water System Operations (WSO) series. This water operator education series was designed by the American Water Works Association (AWWA) to address core test content on certification exams by operator certification type (treatment or distribution) and certification grade level.

The current books in the series are:

WSO Water Treatment, Grade 1

WSO Water Treatment, Grade 2

WSO Water Treatment, Grades 3 & 4

WSO Water Distribution, Grades 1 & 2

WSO Water Distribution, Grades 3 & 4