NGWA Pump installers Style Questions — Pumps, Licensing,
Safety, and Controls Study Guide
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. What is the maximum allowable nitrate concentration in drinking water?
A. 5 ppm
B. 8 ppm
C. 10 ppm
D. 15 ppm
Answer: C. 10 ppm
2. A well is 600 ft deep, static level is 200 ft, and pumping level is 525 ft. What
casing material is most appropriate?
A. PVC
B. Steel
C. Copper
D. Polyethylene
Answer: B. Steel
3. What is used to prevent debris and contaminated water from entering the
well casing?
A. Screen
B. Gravel pack
C. Watertight seal
, D. Vent cap
Answer: C. Watertight seal
4. Adding more impellers to a pump increases:
A. Flow rate only
B. PSI (pressure)
C. Voltage
D. Amperage
Answer: B. PSI
5. When should iron be checked in a well?
A. Before drilling
B. During drilling
C. After chlorination
D. Before pumping
Answer: C. After chlorination
6. A domestic well is defined as:
A. Agricultural well
B. Residential well
C. Industrial well
D. Monitoring well
Answer: B. Residential well
7. If voltage supplied to a submersible pump increases, voltage in the wire
will:
A. Decrease
B. Remain constant
C. Increase
, D. Drop to zero
Answer: C. Increase
8. The largest pump typically available single-phase at 230 volts is
approximately:
A. 5 HP
B. 10 HP
C. 15 HP
D. 25 HP
Answer: C. 15 HP
9. Utility mark-outs are typically valid for:
A. 15 days
B. 30 days
C. 45 days
D. 60 days
Answer: C. 45 days
10.Lateral discharge lines should typically be buried at least:
A. 12 inches
B. 24 inches
C. 36 inches
D. 48 inches
Answer: C. 36 inches
11.A voltmeter measures:
A. Current
B. Resistance
C. Electrical pressure
, D. Power
Answer: C. Electrical pressure
12.Cut-in and cut-out refer to:
A. Pump wiring
B. Pump turning on and off through pressure switch
C. Motor rotation
D. Tank pressure rating
Answer: B
13.How many ratchet straps are required for a 21-ft pipe?
A. 1
B. 2
C. 3
D. 4
Answer: C. 3
14.A CDL driver must conduct a pre-trip inspection:
A. Weekly
B. Monthly
C. Daily
D. Yearly
Answer: C. Daily
15.Pump trucks should be serviced:
A. Weekly
B. Monthly
C. Daily
Safety, and Controls Study Guide
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. What is the maximum allowable nitrate concentration in drinking water?
A. 5 ppm
B. 8 ppm
C. 10 ppm
D. 15 ppm
Answer: C. 10 ppm
2. A well is 600 ft deep, static level is 200 ft, and pumping level is 525 ft. What
casing material is most appropriate?
A. PVC
B. Steel
C. Copper
D. Polyethylene
Answer: B. Steel
3. What is used to prevent debris and contaminated water from entering the
well casing?
A. Screen
B. Gravel pack
C. Watertight seal
, D. Vent cap
Answer: C. Watertight seal
4. Adding more impellers to a pump increases:
A. Flow rate only
B. PSI (pressure)
C. Voltage
D. Amperage
Answer: B. PSI
5. When should iron be checked in a well?
A. Before drilling
B. During drilling
C. After chlorination
D. Before pumping
Answer: C. After chlorination
6. A domestic well is defined as:
A. Agricultural well
B. Residential well
C. Industrial well
D. Monitoring well
Answer: B. Residential well
7. If voltage supplied to a submersible pump increases, voltage in the wire
will:
A. Decrease
B. Remain constant
C. Increase
, D. Drop to zero
Answer: C. Increase
8. The largest pump typically available single-phase at 230 volts is
approximately:
A. 5 HP
B. 10 HP
C. 15 HP
D. 25 HP
Answer: C. 15 HP
9. Utility mark-outs are typically valid for:
A. 15 days
B. 30 days
C. 45 days
D. 60 days
Answer: C. 45 days
10.Lateral discharge lines should typically be buried at least:
A. 12 inches
B. 24 inches
C. 36 inches
D. 48 inches
Answer: C. 36 inches
11.A voltmeter measures:
A. Current
B. Resistance
C. Electrical pressure
, D. Power
Answer: C. Electrical pressure
12.Cut-in and cut-out refer to:
A. Pump wiring
B. Pump turning on and off through pressure switch
C. Motor rotation
D. Tank pressure rating
Answer: B
13.How many ratchet straps are required for a 21-ft pipe?
A. 1
B. 2
C. 3
D. 4
Answer: C. 3
14.A CDL driver must conduct a pre-trip inspection:
A. Weekly
B. Monthly
C. Daily
D. Yearly
Answer: C. Daily
15.Pump trucks should be serviced:
A. Weekly
B. Monthly
C. Daily
