26 September 2019,

For more practice problems: https://www.waterandwastewatercourses.com/

To enroll in a test-prep course, click here: https://water-and-wastewater-courses.teachable.com/p/water-treatment-operator-certification

Latest blog post:

https://www.waterandwastewatercourses.com/test-questions-water-treatment-operator-certification-exam/ .

This video covers 5 common types of questions on the Water Treatment Operator Certification Exam. This video is intended for newer operators studying for the first 2 certification levels.

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