Water and wastewater operators play a vital role in protecting public health and the environment. They make sure that drinking water is safe and that wastewater is properly treated before it returns to nature. If you’re considering a community-oriented career in this essential field, understanding how to become a licensed operator is the first step.
An operator is responsible for the daily operation and maintenance of water and wastewater treatment plants, collection and distribution systems.
Their main duties include:
Procedures to become a licensed operator are different in each State. If you're interested in becoming a licensed operator, make sure to follow the process for your state.
Before applying for certification, most states require you to:
It’s always a good idea to check your state’s specific requirements, as they vary.
Enroll in operator training courses that teach you the fundamentals of water and wastewater treatment and prepare you for the operator certification exam.
Cover topics such as:
Our online training courses and exam prep tests prepare you for the operator certification exams at your own pace.
In most states, WPI (formerly ABC) creates and provides the operator certification exams. They consist of 100 questions. Check the Need-to-Know Criteria for their exams.
To succeed:
In most states, after passing the exam, you will be considered an OIT (operator in training). You will be required to have a certain number of on-the-job hours before you can become fully certified.
Find a position as an OIT in your local utility is the best way to get practical experience in:
Tip: Keep a log of your experience hours. It will help you when submitting your certification application.
Operator licenses must be renewed regularly, usually every two to three years. Each state has their own renewal policy, so again, make sure to check your state's requirements.
To renew, you’ll need to complete continuing education units (CEUs) through approved courses.
Tip: Watura training courses are preapproved to deliver CEUs in +30 states. Create an account to track your earn and track CEUs in the same place.

Becoming a certified operator is a rewarding career path that offers stability, growth, and purpose.
You’ll make a direct impact on your community.
If you’re ready, explore Watura’s online courses and tools to guide you through each step, from training to certification renewal.
Your journey to becoming a certified operator starts with creating a Watura account here. 😉
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