The American Water Works Association has relaunched its Water System Operations series with fully revamped versions of Water Treatment, Grade 1; Water Treatment, Grade 2; and Water Treatment, Grades 3 & 4. WSO: Water Distribution Grades 1 & 2 and Grades 3 & 4 will be available this fall.

AWWA’s WSO series provides the foremost test preparation materials for water operator certification. Additionally, it is now the only book series aligned with Association of Boards of Certification Need-to-Know criteria. ABC administers water operator certification testing for most of North America.

WSO: Water Treatment, Grade 1, Grade 2 and Grades 3 & 4 are designed to assist water operators in preparing for exams by focusing on core test content including regulations, specific treatment processes, water-quality testing and treatment plant safety. Test questions, full color graphics and illustrations, and links to additional instructional videos are also included throughout each chapter to further assist students in test preparation. 

WSO: Water Treatment, Grade 1, Grade 2 and Grades 3 & 4 are available in AWWA’s online store. 

About the publications:
WSO: Water Treatment, Grade 1
Published by American Water Works Association
ISBN: 978-1-62576-123-1
Softcover, 430pp. 
Price: $60 AWWA members, $79 non-members 
Product #: 1940

WSO: Water Treatment, Grade 2
Published by American Water Works Association
ISBN: 978-1-62576-124-8
Softcover, 404pp. 
Price: $72 AWWA members, $95 non-members 
Product #: 1941

WSO: Water Treatment, Grades 3 & 4
Published by American Water Works Association
ISBN: 978-1-62576-125-5
Softcover, 296pp. 
Price: $78 AWWA members, $103 non-members 
Product #: 1942

About AWWA
Established in 1881, the American Water Works Association is the largest nonprofit, scientific and educational association dedicated to managing and treating water, the world’s most important resource. With about 50,000 members, AWWA provides solutions to improve public health, protect the environment, strengthen the economy and enhance our quality of life.