OperatorExamPrep / TCEQ Class D Water Operator · practice exam
Texas · TCEQ Occupational Licensing · Water Operator Class D

The Class D water exam, at the pace of the real terminal.

Fifty original questions written to TCEQ's Basic Water Works Operations curriculum, with the arithmetic worked out line by line. We recommend you sit it timed, the way you will at the testing center, or work through it with an explanation after every answer.

36%
of Class D water candidates passed in one recent quarter (896 sittings, TCEQ)
70
points out of 100 to pass the real exam
3 hrs
for about 100 questions at the terminal. This set: 50 questions, 90 minutes

Exam mode

  • 90-minute clock, same pace as the real thing
  • No feedback until you submit
  • Formula sheet in a side panel, like the one the proctor hands you
  • Flag questions and jump back from the question map
  • Nothing interrupts the clock; the formula check-in lives in Study mode only

Study mode

  • Untimed
  • See the explanation the moment you answer
  • Every math problem shows its steps and the formula-sheet line it came from
  • Miss a math question and it asks which formula you used, one tap, so you learn whether the slip was the setup or the arithmetic
  • Same 50 questions

Allowed at the real exam: a non-programmable calculator, the TCEQ formula and conversion sheet, scratch paper from the proctor. Nothing else. Do the same here.