semplr.

Exams · Certifications · Licensing

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

WC lift stations: practice questions

Our Water/Wastewater Operator bank has 17 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

Start the free mock exam

Question 1 · Wastewater Collection Class I

Under the Ten States Standards, what conditions must trigger a pumping station alarm?

  1. Power failure, high wet well level, pump failure, unauthorized entry or other malfunction
  2. Only fire inside the station building
  3. Only a fire inside the station building, since other problems can wait for the next scheduled visit
  4. Only scheduled maintenance
Show the answer

A. Power failure, high wet well level, pump failure, unauthorized entry or other malfunction — Ten States Standards 46.

Question 2 · Wastewater Collection Class I

What four types of wastewater pumping stations do the Ten States Standards list?

  1. Wet well/dry well, submersible, suction lift and screw pump
  2. Peristaltic, diaphragm, gear and airlift pumping stations used for raw sewage
  3. Centrifugal, peristaltic, diaphragm and gear
  4. Only submersible
Show the answer

A. Wet well/dry well, submersible, suction lift and screw pump — Ten States Standards 42.1.

Question 3 · Wastewater Collection Class I

What does a lift station do?

  1. Treats wastewater with chemicals before it reaches the plant, so the plant can be smaller
  2. Removes grit only
  3. Treats wastewater before it reaches the plant
  4. Pumps wastewater from a lower elevation to a higher one so it can continue by gravity
Show the answer

D. Pumps wastewater from a lower elevation to a higher one so it can continue by gravity — Common in flat or hilly areas.

Question 4 · Wastewater Collection Class I

Why should wet wells be cleaned periodically?

  1. It isn't necessary
  2. Grease, grit and debris build up and interfere with pumps and level controls
  3. For appearance and to lower the amount of inflow reaching the station from the sewer
  4. For appearance and to lower inflow
Show the answer

B. Grease, grit and debris build up and interfere with pumps and level controls — Clean and maintain tanks.

Question 5 · Wastewater Collection Class I

What is the main goal of emergency operation planning for lift stations?

  1. Lowering power bills during peak hours and reducing pump wear
  2. Increasing flow
  3. Preventing raw wastewater discharges and basement backups
  4. Reducing pump maintenance
Show the answer

C. Preventing raw wastewater discharges and basement backups — Ten States Standards 47.1.

More Water/Wastewater Operator topics