Part of the water operator pass
TCEQ Class C Wastewater practice exam: the full 100-question exam
100 questions · 180 minutes · pass mark 70 of 100
100 questions across TCEQ’s Need-to-Know subjects. You get a score by subject and topic, and an explanation for every option.
Before you start
- Every question has four options and one best answer.
- Content: Statutes, rules, permits and design criteria 11, Safety and management 11, Laboratory and process control 11, Collection and pumping 11, Preliminary and primary treatment 11, Ponds, trickling filters and activated sludge 11, Disinfection and effluent disposal 11, Sludge digestion and biosolids 11, Math 12.
- TCEQ publishes the subjects but not the number of questions, their weights or the time limit for this exam. Our practice exam is 100 questions in 3 hours with the subjects in equal shares.
- You can skip, go back, change answers and flag questions. The 180-minute clock keeps running in background tabs and reloads, and the exam is submitted when time runs out.
Game Assessment Prep is an independent practice site, not affiliated with or endorsed by Water Professionals International (WPI, formerly ABC), the California State Water Resources Control Board or the Texas Commission on Environmental Quality. Every question is original; none is taken from a certification exam, an official study guide or another prep provider.