10-Day Course
May 18–29 | Mon–Fri | 9 AM–1 PM CT

Format: 5-day Fundamentals + 5-day Class D Exam Prep

Best for: students who need flexibility but still want live instruction.

Class is an online, instructor-led,full-career-launch course. Recommended path for beginners. This bundle includes Water Treatment Fundamentals plus Class D Exam Prep, giving you both the foundation and the focused exam preparation needed to move forward with confidence.

10-Day Course
May 18–29 | Collinsville, IL | 9 AM-3 PM CT

Format: 5-day Fundamentals + 5-day Class D Exam Prep

Best for: students who want real plant exposure and a more immersive experience.

In-person Class is held at a Water Treatment Facility. Students learn in a real operating environment with facility tours, live demonstrations, hands-on training, and exposure to daily life in the field. Designed for students who want a more immersive, practical training experience. Everything you need to get started and take your Class D Exam.

5-Day Course

🗓️ May 25th - 29th

🕘 9:00 am - 1:00 pm Central Time

A focused exam-prep course for students who already understand the basics and are ready to prepare for the Class D Water Operator exam. Includes topic review, practice questions, math review, test-taking guidance, and next steps for exam registration and OIT planning.

5-Day Course
May 18–22 | Mon–Fri | 9 AM–1 PM CT

A beginner-friendly course for people new to the water industry. Learn what water operators do, how treatment systems work, basic terminology, safety, introductory math, and the IL/MO licensing path. This course helps you build a strong foundation before moving into Class D exam prep.