AWWA Exam Prep App


  • Developed by water industry experts
  • See answer explanations, including equations & formulas
  • Track your progress with charts & detailed results

Get started today with these 3 easy steps...

Download the FREE App

The app is free and comes with 20 questions.

Download it on iOS | Android | Web App

Register Your Account

Registering an account is free and easy. When you register, you can track your progress, sync your devices, and purchase question sets.

Validate Your Account

When you register you will receive a confirmation email. The email includes a link to validate your account. Validating your account lets you buy questions.


After you download the app, you will be able to login from your desktop and purchase question sets.

Log-In and Buy Now.


Grades 1 & 2
Includes 550+ Questions

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Grades 1, 2, 3 & 4
Includes 250+ Questions

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Grades 3 & 4
Includes 650+ Questions

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Grades 1, 2, 3 & 4
Includes 250+ Questions

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Grades 1 & 2
Includes 500+ Questions

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200+ Questions Covering:
Measuring & Converting
Hydraulics & Pumping
Chemistry & Dosage

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Grades 3 & 4
Includes 250+ Questions


AWWA has resources to help you become a certified operator or advance your career.

Free Resources

I'll be using it quite a bit... it's really easy to look at my phone to study when I have down time.

Dylan, Water Operator in Parker, CO

I'm always trying to find time to study and this will help... I'd use it everyday.

Tony, Water Treatment Operator Class D

Much love to AWWA and all of their staff continuing to do great things for our industry!

Steve, Waterwisepro Training

Study Anywhere, Anytime

Offline access allows you to study on the go, wherever it is the most convenient for you.

Detailed Answers Included

Every math question includes a detailed explanation of the answer so you can learn from your mistakes.

Track your Progress

Understand where you need to focus with detailed exam results and cumulative history charts.

Vetted by Industry Experts

Q&As have been reviewed by water industry experts. Meets the latest ABC Need-to-Know Criteria.

Frequently Asked Questions

How do I purchase question sets?

You must register to purchase question sets. To register a new user account in the app, click Sign In on the Profile screen and follow the instructions. At the end, you will receive an email verifying your registration, with a direct link to purchase questions. If you are already registered, go to the web app and click Buy Questions Now to buy question sets. Question sets can only be purchased within the web app.

How do I know which set will help me prepare for my state’s exam?

Certification requirements vary by state or provincial. Many states follow guidelines from the Association of Boards of Certification (ABC) in their operator exams. Questions marked "Introductory" are designed to aid operators in studying for ABC grades 1 and 2 exams; questions marked "Advanced" are geared toward ABC grades 3 and 4 exams. The Math Refresher question set provides practice in operator math which can apply across all grades. For more information, visit the website of your local water operator certification authority.

What’s the difference between the Exam Prep app and the book?

The question sets available for Water Treatment and Water Distribution contain over 2200 questions; in the Water Operator Certification Exam Prep book, a subset of 1400 of these questions are included. The question sets available for Wastewater contain over 550 questions; in the Wastewater Operator Certification Exam Prep book, all of these questions are included. Additional features of the app include the ability to track your progress, randomize question orders and see detailed answer explanations.

How long do I have access to purchased questions?

Purchased question sets do not expire.

Who can I contact if I have a question? with any questions or to report any issues.

Can I use Exam Prep across multiple devices?

Yes, activity and purchases will sync across multiple devices. The same sign-in information for the mobile app will also work for the web (desktop) app. (Please note that sharing access with other individuals may result in the rescinding of access with no refund.)

What references can I read to accompany the Exam Prep?

To learn the content tested on operator certification exams, we recommend the AWWA WSO (Water System Operations) series of books and videos.

How do I reset my progress through the questions?

You can reset your progress (progress bars, record of questions answered correctly) at any time using by going to the Profile / Settings page, and clicking Clear All Answers and Labels.

What is the refund policy?

Refunds will only be given if requested within 24 hours of purchase. To receive a refund, please email with your name, date of purchase, and a description of the issue.