Each year hundreds of wastewater professionals strive to accomplish their goal of passing a California wastewater operator exam. The high stakes testing environment causes many to approach the test with increased levels of both anticipation and anxiety. While successfully passing a certification exam can lead to improved career opportunities, failure can result in hundreds of dollars in lost fees, and a lengthy wait for the next testing opportunity. For many, failure is not an option. This is why Viridian Wastewater Consulting offers certification exam review courses.


Students spend three days in an interactive classroom, where they review specific wastewater topics relevant to each exam grade level.

Instructors are experienced & SWRCB licensed Grade 5 wastewater professionals familiar with the content and structure of the State exams.

Online practice exams are made available to you every week until your exam!

Over a hundred practice questions are given!

An extensive math review course is included that focuses on difficult wastewater math problems that must be mastered in order to pass specific grade level exams. Each problem is broken down and easy to remember steps are demonstrated.

In-depth essay discussions on the wastewater industry help prepare students to answer those difficult essay questions on each exam level.

General testing strategies are covered, paired with specific discussions of the processes and theories that appear most commonly on the exam.


These courses are designed to appeal to all, regardless of prior experience or education. Those who are new to the field find our courses indispensable in preparing for their first exam. More experienced operators find the courses a great refresher, and an excellent way to hone existing skills. 

Check out what our students are saying about our review classes!

A Service By Viridian Wastewater Consulting LLC

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