Driver OperatOr MObile Water Supply exaM (20 QueStiOnS)
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Question 1
According to NFPA 1901, what is the minimum water tank capacity required for an apparatus
to be classified as a Mobile Water Supply apparatus?
A) 500 gallons (1,893 liters)
B) 1,000 gallons (3,785 liters)
C) 1,500 gallons (5,678 liters)
D) 2,000 gallons (7,570 liters)
Answer: B) 1,000 gallons (3,785 liters)
ratiOnale: NFPA 1901 defines a mobile water supply apparatus as a vehicle that carries at
least 1,000 gallons of water specifically for transporting water to emergency scenes. The
majority of water tenders today carry between 1,500 and 3,000 gallons, but 1,000 gallons is
the minimum standard.
Question 2
Identify the FIVE requirements for a Mobile Water Supply apparatus as specified in NFPA 1901.
A) 1. Tank-to-pump line at least 2 inches in diameter capable of supplying 500 GPM until 80%
of tank is empty
2. At least one external fill connection with minimum fill rate of 1000 GPM
3. External fill connection equipped with valve, strainer, and 30-degree elbow
4. Valves 3 inches or larger must be slow-closing design
5. At least three large tank discharges capable of discharging 90% of tank volume at 1000
GPM average
, B) 1. Minimum tank capacity of 500 gallons
2. Ability to pump 250 GPM
3. Equipped with hard suction hose
4. Must have onboard foam system
5. Must have four-wheel drive
C) 1. Maximum vehicle weight of 50,000 pounds
2. Must carry 2,000 feet of supply hose
3. Must have aerial ladder
4. Must have CAFS system
5. Must have emergency lighting
D) 1. Tank-to-pump line at least 4 inches
2. Fill rate of 500 GPM
3. Discharges at 500 GPM
4. Fast-closing valves only
5. One large tank discharge
Answer: A) 1. Tank-to-pump line at least 2 inches in diameter capable of supplying 500 GPM
until 80% of tank is empty; 2. At least one external fill connection with minimum fill rate of
1000 GPM; 3. External fill connection equipped with valve, strainer, and 30-degree elbow; 4.
Valves 3 inches or larger must be slow-closing design; 5. At least three large tank discharges
capable of discharging 90% of tank volume at 1000 GPM average
ratiOnale: NFPA 1901 details specific requirements for mobile water supply apparatus to
ensure operational effectiveness. The tank-to-pump line must sustain 500 GPM until the tank
is 80% empty. The 1000 GPM fill rate allows rapid turnaround at fill sites. Slow-closing valves
prevent water hammer. The three large discharges ensure efficient offloading at the dump
site.
Question 3
What is the primary function of a Mobile Water Supply apparatus?
A) To serve as a rescue vehicle for technical rescue operations
B) To transport water to areas where a water supply system is nonexistent or inadequate
actual exaM 2026/2027 – cOMplete exaM-Style QueStiOnS With
DetaileD ratiOnaleS | 100% verifieD – paSS GuaranteeD – a+
GraDeD
Question 1
According to NFPA 1901, what is the minimum water tank capacity required for an apparatus
to be classified as a Mobile Water Supply apparatus?
A) 500 gallons (1,893 liters)
B) 1,000 gallons (3,785 liters)
C) 1,500 gallons (5,678 liters)
D) 2,000 gallons (7,570 liters)
Answer: B) 1,000 gallons (3,785 liters)
ratiOnale: NFPA 1901 defines a mobile water supply apparatus as a vehicle that carries at
least 1,000 gallons of water specifically for transporting water to emergency scenes. The
majority of water tenders today carry between 1,500 and 3,000 gallons, but 1,000 gallons is
the minimum standard.
Question 2
Identify the FIVE requirements for a Mobile Water Supply apparatus as specified in NFPA 1901.
A) 1. Tank-to-pump line at least 2 inches in diameter capable of supplying 500 GPM until 80%
of tank is empty
2. At least one external fill connection with minimum fill rate of 1000 GPM
3. External fill connection equipped with valve, strainer, and 30-degree elbow
4. Valves 3 inches or larger must be slow-closing design
5. At least three large tank discharges capable of discharging 90% of tank volume at 1000
GPM average
, B) 1. Minimum tank capacity of 500 gallons
2. Ability to pump 250 GPM
3. Equipped with hard suction hose
4. Must have onboard foam system
5. Must have four-wheel drive
C) 1. Maximum vehicle weight of 50,000 pounds
2. Must carry 2,000 feet of supply hose
3. Must have aerial ladder
4. Must have CAFS system
5. Must have emergency lighting
D) 1. Tank-to-pump line at least 4 inches
2. Fill rate of 500 GPM
3. Discharges at 500 GPM
4. Fast-closing valves only
5. One large tank discharge
Answer: A) 1. Tank-to-pump line at least 2 inches in diameter capable of supplying 500 GPM
until 80% of tank is empty; 2. At least one external fill connection with minimum fill rate of
1000 GPM; 3. External fill connection equipped with valve, strainer, and 30-degree elbow; 4.
Valves 3 inches or larger must be slow-closing design; 5. At least three large tank discharges
capable of discharging 90% of tank volume at 1000 GPM average
ratiOnale: NFPA 1901 details specific requirements for mobile water supply apparatus to
ensure operational effectiveness. The tank-to-pump line must sustain 500 GPM until the tank
is 80% empty. The 1000 GPM fill rate allows rapid turnaround at fill sites. Slow-closing valves
prevent water hammer. The three large discharges ensure efficient offloading at the dump
site.
Question 3
What is the primary function of a Mobile Water Supply apparatus?
A) To serve as a rescue vehicle for technical rescue operations
B) To transport water to areas where a water supply system is nonexistent or inadequate
