AWWA WATER TREATMENT PLANT MAINTENANCE
TECHNICIAN CERTIFICATION EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
Q&A 2026 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of preventive maintenance in
a water treatment plant?
A. Increase chemical dosing
B. Reduce equipment breakdowns
C. Increase water turbidity
D. Replace all equipment monthly
Rationale: Preventive maintenance helps avoid unexpected
failures.
Correct answer: B
2. Which component is commonly inspected in pump
maintenance?
A. Paint color
B. Bearing condition
C. Pipe diameter only
D. Water taste
Rationale: Bearings affect pump performance and wear.
Correct answer: B
,3. What is the main function of a centrifugal pump?
A. Heat water
B. Move water using rotational energy
C. Filter water
D. Store chemicals
Rationale: Centrifugal force moves water through the system.
Correct answer: B
4. Which instrument measures water flow rate?
A. Thermometer
B. Flow meter
C. Hydrometer
D. Barometer
Rationale: Flow meters measure water movement.
Correct answer: B
5. What is a common cause of pump cavitation?
A. Excess lubrication
B. Low suction pressure
C. High voltage
D. Clean water
Rationale: Low pressure causes vapor bubble formation.
Correct answer: B
,6. Which valve prevents backflow in pipelines?
A. Gate valve
B. Check valve
C. Globe valve
D. Air valve
Rationale: Check valves allow one-direction flow.
Correct answer: B
7. What does lubrication in maintenance prevent?
A. Rust only
B. Friction and wear
C. Water flow
D. Electrical failure
Rationale: Lubrication reduces mechanical wear.
Correct answer: B
8. What is the purpose of a pressure gauge?
A. Measure temperature
B. Measure fluid pressure
C. Measure chlorine
D. Measure turbidity
Rationale: Pressure gauges monitor system pressure.
Correct answer: B
, 9. Which is a sign of bearing failure?
A. Smooth operation
B. Excess noise and heat
C. Clear water
D. High pH
Rationale: Noise and heat indicate wear.
Correct answer: B
10. What is used to disinfect water systems?
A. Oxygen
B. Chlorine
C. Nitrogen
D. Helium
Rationale: Chlorine kills pathogens.
Correct answer: B
11. What does a motor control center (MCC) do?
A. Stores water
B. Controls electric motors
C. Filters chemicals
D. Measures pH
Rationale: MCC manages motor operations.
Correct answer: B
TECHNICIAN CERTIFICATION EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
Q&A 2026 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of preventive maintenance in
a water treatment plant?
A. Increase chemical dosing
B. Reduce equipment breakdowns
C. Increase water turbidity
D. Replace all equipment monthly
Rationale: Preventive maintenance helps avoid unexpected
failures.
Correct answer: B
2. Which component is commonly inspected in pump
maintenance?
A. Paint color
B. Bearing condition
C. Pipe diameter only
D. Water taste
Rationale: Bearings affect pump performance and wear.
Correct answer: B
,3. What is the main function of a centrifugal pump?
A. Heat water
B. Move water using rotational energy
C. Filter water
D. Store chemicals
Rationale: Centrifugal force moves water through the system.
Correct answer: B
4. Which instrument measures water flow rate?
A. Thermometer
B. Flow meter
C. Hydrometer
D. Barometer
Rationale: Flow meters measure water movement.
Correct answer: B
5. What is a common cause of pump cavitation?
A. Excess lubrication
B. Low suction pressure
C. High voltage
D. Clean water
Rationale: Low pressure causes vapor bubble formation.
Correct answer: B
,6. Which valve prevents backflow in pipelines?
A. Gate valve
B. Check valve
C. Globe valve
D. Air valve
Rationale: Check valves allow one-direction flow.
Correct answer: B
7. What does lubrication in maintenance prevent?
A. Rust only
B. Friction and wear
C. Water flow
D. Electrical failure
Rationale: Lubrication reduces mechanical wear.
Correct answer: B
8. What is the purpose of a pressure gauge?
A. Measure temperature
B. Measure fluid pressure
C. Measure chlorine
D. Measure turbidity
Rationale: Pressure gauges monitor system pressure.
Correct answer: B
, 9. Which is a sign of bearing failure?
A. Smooth operation
B. Excess noise and heat
C. Clear water
D. High pH
Rationale: Noise and heat indicate wear.
Correct answer: B
10. What is used to disinfect water systems?
A. Oxygen
B. Chlorine
C. Nitrogen
D. Helium
Rationale: Chlorine kills pathogens.
Correct answer: B
11. What does a motor control center (MCC) do?
A. Stores water
B. Controls electric motors
C. Filters chemicals
D. Measures pH
Rationale: MCC manages motor operations.
Correct answer: B
