Pass Your Class A Exam
Practice questions with detailed explanations for every answer
Class A Full Access
- All Class A practice questions
- Math, Pumping, Activated Sludge & Disinfection
- Detailed explanations for every answer choice
- New questions added regularly
- Lifetime access — never expires
More grades (B, C, D) and Collection System exams coming soon.
Frequently Asked Questions
What's included?
Full access to all Class A practice questions across 4 categories — Math, Pumping, Activated Sludge, and Disinfection. Every question includes detailed explanations for ALL answer choices, not just the correct one.
How long do I have access?
Lifetime access. Once you purchase, you can practice as many times as you need. New questions are added regularly at no extra cost.
What if I fail my exam?
Keep practicing! Your access never expires. Most operators who use our questions pass on their first or second attempt.
Can I try before I buy?
Yes! You can answer 5 practice questions completely free — no account required. Sign up when you want to save your progress.
Is this for TCEQ exams?
Yes. Our questions are designed for TCEQ Class A wastewater treatment operator certification exams, aligned with ABC Need-to-Know Criteria.