Texas Water Operator Class D Exam Prep

Current Status

500 original practice questions across 8 subject areas, organized on the eight subject areas TCEQ publishes in its Need-to-Know guidance for Class D operators.
Practice for a computer-based exam: the full practice exam runs on the same 3-hour limit TCEQ publishes for the real CBT sitting.
A fixed set of 12 free sample questions, so you can gauge the style before you buy.
A full 100-question practice exam (180-minute clock) drawing fresh questions on every attempt — the 100-question draw is this program’s own practice format.
Calculation items throughout — 60 across the bank, all in the Math area — area, volume, and chemical dosage problems worked from standard conversion constants.
Our practice exam is scored against a 70% practice benchmark, set to mirror the published 70% passing standard TCEQ publishes for the Texas water operator exams. PRACTICE BENCHMARK ONLY — your score here is a study signal, not a result on the real exam.

A drill for each of the 8 topics:

Lesson Content