Sold Out “Review & Prep for Wastewater Operator level 1 & 2 Certification Exam” in-person workshop, Longview, WA; WW CEU

  •  September 13, 2022
     8:00 AM - 4:00 PM
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Event Phone: 360-490-2426

We met our minimum registration requirements

Extended Registration Deadline: 5pm September 12th, 2022



You made the decision that it is time to take your Wastewater Operator Certification Exam. Now what? Whether you are new to the field or have been working in it for years, taking the Certification Exam can be unnerving and requires a lot of preparation. Studying wastewater treatment manuals, talking to other operators, learning test taking skills . . . these are all great steps that will help you successfully pass your exam. Exam Prep classes are great opportunities to hear about what to expect from the exam, refresh your knowledge, identify your strengths and weaknesses, learn from fellow operators how they were successful with taking other exams, and more.

Our “Review & Prep for Wastewater Operator Level 1 & 2 Certification Exam” IN-PERSON workshop consists of three 7hour sessions totaling 21 hours over a three-day period.


This workshop is perfect for operators who understand the principles of wastewater treatment and are interested in obtaining their Wastewater Operator level OIT, I or II certificate. This class will explain what to expect from the exam and help you identify areas you may want to focus on during your exam prep activities.


In this workshop we will also:

  • review the principles of:
    • basic collection systems
    • pump stations
    • preliminary treatment
    • primary treatment
    • secondary treatment
    • tertiary treatment
    • disinfection
    • sludge handling
    • sample collection
    • basic wastewater laboratory tests, equipment, and skills
    • wastewater safety
  • explain how to make sense of word problems and determine how to obtain the correct answer
  • address math formulas as they apply to wastewater treatment
  • provide many opportunities to practice and solve problems typical of those encountered on certification exams
  • share tips for how to prepare yourself for the exam
  • explore test taking techniques


Our IN-PERSON “Review & Prep for Wastewater Operator Level 1 & 2 Certification Exam” workshop will help you move your thought process from operation mode into the “test taking mode” and boost your confidence in your ability to pass the exam.

Since Wastewater Operator Certification Exams require knowledge across a very complex and wide area, general exam prep classes are fast paced and do not allow for in depth discussions and explanations; instead, they focus on review and practice questions. For those who are struggling with wastewater math we would strongly encourage you to also take our “Math Review & Exam Prep for OIT and Level I & II Operators” workshop. Based on your background you may also want to consider taking additional classes such as our “Trickling Filters, RBC, MBBR, & Lagoons” “Principles of the Activated Sludge Process”, “Introduction to Disinfection for Wastewater Operations”, “Sample Collection & Sampling Plans”, “Biosolids Treatment”, which explain specific topics in more detail.


Dates: 09/13, 09/14, 09/15

Time: 8:00 am to 4 pm PT on all three days (total of 21 hours)

Where: Three Rivers Regional Wastewater Authority (TRRWA), 467 Fibre Way, Longview, WA

Fee: $599

Instructor: David Stoops

Registration: online:; phone: (360) 490-2426; email:

Contact: or (360) 490-2426

Meets professional growth criteria for wastewater.

Professional Training Association is actively seeking approval from other states. All of our classes meet professional growth criteria and continuing education requirements for wastewater. For those classes that are currently undergoing review by the individual states and have not received official approval yet, please contact us for more information.

Approved for 2.1 CEUs and/or 21.0 Training credits in the following states: 

For more information on training approval in your state please call: (360)490-2426


Refreshments provided by Professional Training Association.

Meals (breakfast, lunch, & dinner) must be provided by workshop participants.


Venue Phone: 360-577-2040

467 Fibre Way, Longview, Washington, 98632, United States