Water System Operations

The Industry Leading Series for Operator Certification Training

Certified water operators are a crucial part of providing an adequate and safe supply of water. Water System Operations (WSO) materials are the most relevant and up-to-date training materials for operators who are trying to pass their certification exams. The WSO brand focuses on providing a variety of learning materials because we know that everyone learns differently. Study with a WSO book, video, app – whatever works best for you!

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Start Studying to Pass Your Certification Exam

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WSO Guidebooks

The WSO set of guidebooks cover different grade levels for treatment and distribution. They offer training on fundamental operator practices and principles.

Exam Prep Book

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The Certification Exam Prep Book offers 1,400+ expert-vetted practice questions and answers so that you practice your test-taking skills and make sure you are ready to pass the exam.

Exam Prep App

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Study wherever it is most convenient for you. 2,000+ questions that you can sort by subject, track your progress, and more. Question sets are only $19 each!

WSO books and resources embody AWWA's commitment to up-to-date, affordable operator education.

Tony PetritesProduct Manager

Incorporate WSO Guidebooks in the Classroom

Utilize WSO in your lesson plans to ensure that your students are utilizing the most current, and up-to-date certification preparation materials available.

Beneficial for students:

Focused on Experience. Each book is broken into certification levels.
Affordable. Low prices for each individual book.
Helpful. The books meet Need to Know Criteria used to create state certification exams.
Color Illustrations. Many diagrams in color to enhance understanding
Multimedia Enhanced. Includes available online video learning modules.

Easy for Trainers:

One-stop Resource. Math and chemistry are combined so only one book is needed.
Reinforced Learning. Questions are included at the end of each chapter.
Catered to Different Learning Styles. Free access to online video supplements to show hands-on applications.
Affordable. We offer volume discounts for teachers and trainers looking to use WSO.

Contact us to get a free desk copy for review or to get discounts on bulk purchasers for your class.

WSO Video Resources

WSO Video Clips

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The WSO guidebooks include free access to essential video clips that help further your knowledge.



WSO DVDs

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WSO DVDs offer a more in-depth look at specific topics that are essential for operators to understand.