Clearwell Prep
Texas water operator math · Unofficial practice
TCEQ Class D & Class C · Water

Find your weak spots in water math before exam day

A free 20-question diagnostic for Texas water operator exams. Answer at your own pace, then see which skills need work and a step-by-step solution for every problem.

20questions
8math skills scored
~25minutes, calculator OK
Formula card used in these problems
  • 1 ft³ of water7.48 gal
  • 1 gal of water8.34 lb
  • 1 psi2.31 ft of water
  • 1 ft of water0.433 psi
  • 1 ft³/s448.8 gpm
  • 1 day1,440 min
  • Area of a circle0.785 × D²
  • Pounds formulaMGD × mg/L × 8.34
  • 1%10,000 mg/L
Skills covered, matched to the TCEQ Need-to-Know math criteria:

    Clearwell Prep is an independent study aid. It is not affiliated with, endorsed by, or connected to the Texas Commission on Environmental Quality (TCEQ). All questions are original practice problems, not actual exam questions.

    Pick an answer, or skip if you'd be guessing. Skips count as a miss, which keeps your report honest.