semplr.

Exams · Certifications · Licensing

Water & Wastewater Operator (WPI/ABC Class I) — Practice Exam

WD components: meters: practice questions

Our Water/Wastewater Operator bank has 4 questions on this topic. Here are 4 of them with answers; the full mock exam draws from every topic, like the real one.

Start the free mock exam

Question 1 · Water Distribution Class I

What is 'non-revenue water'?

  1. Water used by large industrial customers who are billed on special contract rates
  2. Water used by large industrial customers on special rates
  3. Water used by large customers
  4. Water produced but not billed, such as leaks, theft and meter errors
Show the answer

D. Water produced but not billed, such as leaks, theft and meter errors — Water audits estimate it.

Question 2 · Water Distribution Class I

What happens to many water meters as they wear?

  1. They always over-register, recording more water than used
  2. They measure pressure instead
  3. They always over-register, so customers are billed for more water than they used
  4. They tend to under-register, recording less water than used
Show the answer

D. They tend to under-register, recording less water than used — Meter testing and replacement programs.

Question 3 · Water Distribution Class I

What does a customer water meter measure?

  1. Volume of water used
  2. Water pressure at the service connection
  3. Water temperature
  4. Chlorine residual
Show the answer

A. Volume of water used — Usually in gallons or cubic feet.

Question 4 · Water Distribution Class I

What is AMR or AMI metering?

  1. Remote meter reading by radio or network
  2. A type of hydrant
  3. Manual reading with a flashlight and a paper route book
  4. A backflow device
Show the answer

A. Remote meter reading by radio or network — Remote readers are listed in the outline.

More Water/Wastewater Operator topics