TEXAS WATER WELL PUMP INSTALLER LICENSE EXAM TESTBANK
2026/2027, HIGH YIELD PRACTICE QUESTIONS AND STUDY GUIDE
COMPLETE ACCURATE QUESTIONS AND CORRECT SOLUTIONS WITH
DETAILED RATIONALES (100% CORRECT VERIFIED ANSWERS)
NEWEST UPDATED VERSION 2026 EDITION | GUARANTEED PASS A+
(BRAND NEW!) FULL REVISED TEXAS WATER WELL PUMP INSTALLER
LICENSE APPROVED EXAM
Which state agency has primary jurisdiction over water well pump installation in Texas?
A) Texas Department of Licensing and Regulation
B) Texas Water Development Board
C) Texas Commission on Environmental Quality
D) Texas Groundwater Conservation District
Correct Answer: C
Rationale: TCEQ has primary authority for water well construction and pump installation
under Texas Administrative Code, Title 30, Chapter 331.
What is the minimum required distance from a septic tank drainfield to a water well
pump site?
A) 25 feet
B) 50 feet
C) 75 feet
D) 100 feet
Correct Answer: D
Rationale: Texas law requires at least 100 feet separation between a septic system’s
absorption field and any water well to prevent bacterial contamination of the
groundwater source.
A submersible pump's control box typically contains which of the following
components?
A) Starting capacitor and relay
B) Pressure switch and air volume control
,C) Foot valve and strainer
D) Packer and tailpipe
Correct Answer: A
Rationale: The control box for a submersible pump houses the starting capacitor and
relay, which assist in motor startup and operation; pressure switches are external, and
foot valves are in the well.
According to Texas regulations, a pump installer must disinfect a well after pump
installation using a chlorine solution of what minimum concentration?
A) 50 mg/L
B) 100 mg/L
C) 200 mg/L
D) 500 mg/L
Correct Answer: B
Rationale: TCEQ rules specify 100 mg/L chlorine concentration for well disinfection
following pump installation or repair to ensure elimination of bacterial contamination.
Which type of pump is most commonly used in Texas for deep wells exceeding 200
feet?
A) Jet pump
B) Centrifugal pump
C) Submersible pump
D) Reciprocating pump
Correct Answer: C
Rationale: Submersible pumps are efficient for deep wells because they operate below
water level, pushing water to the surface, unlike jet pumps which lose efficiency beyond
200 feet.
What is the primary purpose of a torque arrestor on a submersible pump installation?
A) Prevent electrical shock
B) Reduce pump startup torque on the drop pipe
C) Filter sand from well water
D) Measure water flow rate
Correct Answer: B
Rationale: A torque arrestor is a rubber device that prevents the pump and pipe from
twisting during motor startup, protecting the well casing and pipe threads.
,A well pump installer in Texas must be licensed under which TDLR classification for
water well pump installation?
A) Irrigator License
B) Water Well Driller License
C) Pump Installer License
D) Plumbing Inspector License
Correct Answer: C
Rationale: TDLR issues the Water Well Pump Installer license specific to installing,
servicing, and repairing pumps in water wells, separate from drilling or plumbing
licenses.
Which of the following is a violation of Texas pump installation rules?
A) Using PVC drop pipe in a 400-foot well
B) Installing a pump without a pitless adapter
C) Installing a pump without a sanitary seal or well cap
D) Using a check valve above ground
Correct Answer: C
Rationale: Texas law requires a vermin-proof, watertight well cap or sanitary seal to
prevent surface contamination; omitting it is a direct violation of 30 TAC 331.
What is the minimum required distance from a petroleum storage tank to a water well
pump site?
A) 50 feet
B) 100 feet
C) 150 feet
D) 300 feet
Correct Answer: D
Rationale: TCEQ requires a 300-foot setback from underground or aboveground
petroleum storage tanks to protect groundwater from chemical contamination.
Which of the following is an acceptable material for drop pipe in a public water supply
well?
A) Uncoated galvanized steel
B) Lead-based alloy pipe
C) Schedule 40 PVC meeting ASTM D1785
D) Copper tubing without approved fittings
, Correct Answer: C
Rationale: Schedule 40 PVC is commonly allowed; materials that can leach contaminants
(lead, uncoated steel) are prohibited in public water supply wells under 30 TAC 331.
A constant pressure system typically uses which device to maintain steady water
pressure?
A) Pressure tank only
B) Cycle stop valve or variable frequency drive
C) Air volume control
D) Torque arrestor
Correct Answer: B
Rationale: Cycle stop valves and VFDs adjust pump speed or flow to maintain constant
pressure regardless of demand, unlike a standard pressure tank alone.
When performing a pump pull and re-install, what must be done to the drop pipe
threads?
A) Apply heavy grease
B) Use PTFE tape or pipe dope approved for potable water
C) Leave them dry for better grip
D) Weld the joints
Correct Answer: B
Rationale: PTFE tape or NSF-approved pipe dope ensures a leak-tight seal and prevents
contamination; dry threads or grease not rated for potable water are unacceptable.
What is the maximum allowable pump start cycle frequency recommended for a
standard pressure tank to prevent motor burnout?
A) 1 start per hour
B) 5 starts per hour
C) 20 starts per hour
D) Unlimited
Correct Answer: B
Rationale: Most pump manufacturers recommend no more than 5–6 starts per hour to
avoid overheating; excessive cycling damages the motor and control box.
Which test must be performed after well disinfection to verify water is safe for use?
A) Chlorine residual test only
B) Coliform bacteria test
C) pH test
D) Turbidity test
2026/2027, HIGH YIELD PRACTICE QUESTIONS AND STUDY GUIDE
COMPLETE ACCURATE QUESTIONS AND CORRECT SOLUTIONS WITH
DETAILED RATIONALES (100% CORRECT VERIFIED ANSWERS)
NEWEST UPDATED VERSION 2026 EDITION | GUARANTEED PASS A+
(BRAND NEW!) FULL REVISED TEXAS WATER WELL PUMP INSTALLER
LICENSE APPROVED EXAM
Which state agency has primary jurisdiction over water well pump installation in Texas?
A) Texas Department of Licensing and Regulation
B) Texas Water Development Board
C) Texas Commission on Environmental Quality
D) Texas Groundwater Conservation District
Correct Answer: C
Rationale: TCEQ has primary authority for water well construction and pump installation
under Texas Administrative Code, Title 30, Chapter 331.
What is the minimum required distance from a septic tank drainfield to a water well
pump site?
A) 25 feet
B) 50 feet
C) 75 feet
D) 100 feet
Correct Answer: D
Rationale: Texas law requires at least 100 feet separation between a septic system’s
absorption field and any water well to prevent bacterial contamination of the
groundwater source.
A submersible pump's control box typically contains which of the following
components?
A) Starting capacitor and relay
B) Pressure switch and air volume control
,C) Foot valve and strainer
D) Packer and tailpipe
Correct Answer: A
Rationale: The control box for a submersible pump houses the starting capacitor and
relay, which assist in motor startup and operation; pressure switches are external, and
foot valves are in the well.
According to Texas regulations, a pump installer must disinfect a well after pump
installation using a chlorine solution of what minimum concentration?
A) 50 mg/L
B) 100 mg/L
C) 200 mg/L
D) 500 mg/L
Correct Answer: B
Rationale: TCEQ rules specify 100 mg/L chlorine concentration for well disinfection
following pump installation or repair to ensure elimination of bacterial contamination.
Which type of pump is most commonly used in Texas for deep wells exceeding 200
feet?
A) Jet pump
B) Centrifugal pump
C) Submersible pump
D) Reciprocating pump
Correct Answer: C
Rationale: Submersible pumps are efficient for deep wells because they operate below
water level, pushing water to the surface, unlike jet pumps which lose efficiency beyond
200 feet.
What is the primary purpose of a torque arrestor on a submersible pump installation?
A) Prevent electrical shock
B) Reduce pump startup torque on the drop pipe
C) Filter sand from well water
D) Measure water flow rate
Correct Answer: B
Rationale: A torque arrestor is a rubber device that prevents the pump and pipe from
twisting during motor startup, protecting the well casing and pipe threads.
,A well pump installer in Texas must be licensed under which TDLR classification for
water well pump installation?
A) Irrigator License
B) Water Well Driller License
C) Pump Installer License
D) Plumbing Inspector License
Correct Answer: C
Rationale: TDLR issues the Water Well Pump Installer license specific to installing,
servicing, and repairing pumps in water wells, separate from drilling or plumbing
licenses.
Which of the following is a violation of Texas pump installation rules?
A) Using PVC drop pipe in a 400-foot well
B) Installing a pump without a pitless adapter
C) Installing a pump without a sanitary seal or well cap
D) Using a check valve above ground
Correct Answer: C
Rationale: Texas law requires a vermin-proof, watertight well cap or sanitary seal to
prevent surface contamination; omitting it is a direct violation of 30 TAC 331.
What is the minimum required distance from a petroleum storage tank to a water well
pump site?
A) 50 feet
B) 100 feet
C) 150 feet
D) 300 feet
Correct Answer: D
Rationale: TCEQ requires a 300-foot setback from underground or aboveground
petroleum storage tanks to protect groundwater from chemical contamination.
Which of the following is an acceptable material for drop pipe in a public water supply
well?
A) Uncoated galvanized steel
B) Lead-based alloy pipe
C) Schedule 40 PVC meeting ASTM D1785
D) Copper tubing without approved fittings
, Correct Answer: C
Rationale: Schedule 40 PVC is commonly allowed; materials that can leach contaminants
(lead, uncoated steel) are prohibited in public water supply wells under 30 TAC 331.
A constant pressure system typically uses which device to maintain steady water
pressure?
A) Pressure tank only
B) Cycle stop valve or variable frequency drive
C) Air volume control
D) Torque arrestor
Correct Answer: B
Rationale: Cycle stop valves and VFDs adjust pump speed or flow to maintain constant
pressure regardless of demand, unlike a standard pressure tank alone.
When performing a pump pull and re-install, what must be done to the drop pipe
threads?
A) Apply heavy grease
B) Use PTFE tape or pipe dope approved for potable water
C) Leave them dry for better grip
D) Weld the joints
Correct Answer: B
Rationale: PTFE tape or NSF-approved pipe dope ensures a leak-tight seal and prevents
contamination; dry threads or grease not rated for potable water are unacceptable.
What is the maximum allowable pump start cycle frequency recommended for a
standard pressure tank to prevent motor burnout?
A) 1 start per hour
B) 5 starts per hour
C) 20 starts per hour
D) Unlimited
Correct Answer: B
Rationale: Most pump manufacturers recommend no more than 5–6 starts per hour to
avoid overheating; excessive cycling damages the motor and control box.
Which test must be performed after well disinfection to verify water is safe for use?
A) Chlorine residual test only
B) Coliform bacteria test
C) pH test
D) Turbidity test
