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

WD admin: practice questions

Our Water/Wastewater Operator bank has 6 questions on this topic. Here are 4 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1 · Water Distribution Class I

Why are main break and repair records kept?

  1. They aren't useful
  2. They are only used for billing and aren't useful for planning
  3. They show problem areas and guide replacement planning
  4. To meet fire code only
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C. They show problem areas and guide replacement planning — Maintain system records.

Question 2 · Water Distribution Class I

What should a distribution operator say to a customer reporting discolored water?

  1. Tell them the water is safe without checking anything and close the service call
  2. Explain the likely cause, how to flush their taps and when to call back
  3. Tell them to buy bottled water forever
  4. Tell them it's safe without checking and close the call
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B. Explain the likely cause, how to flush their taps and when to call back — Public interactions are part of the outline.

Question 3 · Water Distribution Class I

Why does a distribution system need an emergency plan?

  1. It isn't required
  2. To set water rates and schedule meter readers each month across the whole service area
  3. To respond to main breaks, contamination, power loss and natural disasters
  4. To schedule meter readers
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C. To respond to main breaks, contamination, power loss and natural disasters — Maintain an emergency plan of operations.

Question 4 · Water Distribution Class I

What is a vulnerability assessment?

  1. A customer survey
  2. A meter accuracy test or a hydrant flow test done each year on every main in the system
  3. An evaluation of risks to the system from threats such as tampering or disasters
  4. A pipe inspection only
Show the answer

C. An evaluation of risks to the system from threats such as tampering or disasters — Identify opportunities to mitigate risks.

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