TDLR – Water Well Pump Installer Exam– QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS
| PLUS RATIONALES | DOWNLOAD AND PASS | LATEST EXAM UPDATE 2026/2027
Core Domains
Texas Water Well Driller/Pump Installer Statutes and Rules
Well Construction and Casing Requirements
Grouting and Sealing Methods
Pump Types and Selection Criteria
Pump Sizing and Hydraulic Calculations
Water Quality and Disinfection Procedures
Pressure Tanks and System Controls
Electrical Components and Safety
Continuing Education and Licensing Compliance
Environmental Protection and Ethics
Introduction
,The Texas Water Well Pump Installer licensing examination assesses the knowledge and skills required to install,
maintain, and troubleshoot water well pumping systems in compliance with state regulations. This examination covers
foundational theory and applied professional practice, including pump sizing, well construction standards, disinfection
protocols, and regulatory compliance. Questions are presented in multiple-choice and scenario-based formats to
evaluate both technical competency and real-world decision-making. Emphasis is placed on public health protection,
environmental stewardship, and adherence to Texas Administrative Code requirements. Candidates must demonstrate
understanding of safe installation practices, proper system design, and ethical professional conduct expected of licensed
pump installers in Texas.
SECTION ONE – QUESTIONS 1–50
Question 1
What is the primary purpose of grouting the annular space between a well casing and the borehole?
A. To increase the well's water yield
B. To prevent surface and subsurface contamination from entering the well
C. To reduce the cost of well construction
D. To improve pump efficiency
🟢 Correct Answer: B. To prevent surface and subsurface contamination from entering the well
,🔴 Explanation: Grouting seals the annular space to block contaminants from migrating down the outside of the
casing into the aquifer, protecting groundwater quality .
Question 2
A pump installer is determining the required flow rate for a new residential system. The home has two bathrooms, a
washing machine, a dishwasher, and two outdoor hose bibs. Using the fixture count method, what is the minimum
pump capacity required?
A. 6 GPM
B. 8 GPM
C. 10 GPM
D. 12 GPM
🟢 Correct Answer: D. 12 GPM
🔴 Explanation: The fixture count method allows 1 GPM per fixture. Two bathrooms (toilet, sink, shower each = 6
fixtures), washing machine (1), dishwasher (1), outdoor hose bibs (2), and kitchen sink (1) total 11–12 fixtures,
requiring approximately 12 GPM .
Question 3
, What is the minimum required casing length for a drilled well in unconsolidated formations under Kansas
regulations?
A. 10 feet
B. 15 feet
C. 20 feet
D. 30 feet
🟢 Correct Answer: C. 20 feet
🔴 Explanation: Kansas Administrative Regulations require watertight casing to extend at least 20 feet below ground
level in unconsolidated formations to protect against contamination .
Question 4
A submersible pump is being installed in a well with a dynamic water level of 150 feet. The pressure tank is located
in the basement, 20 feet above ground level. The required pressure at the highest tap is 40 psi. What is the total
pumping head?
A. Approximately 150 feet
B. Approximately 240 feet
C. Approximately 262 feet
D. Approximately 300 feet
| PLUS RATIONALES | DOWNLOAD AND PASS | LATEST EXAM UPDATE 2026/2027
Core Domains
Texas Water Well Driller/Pump Installer Statutes and Rules
Well Construction and Casing Requirements
Grouting and Sealing Methods
Pump Types and Selection Criteria
Pump Sizing and Hydraulic Calculations
Water Quality and Disinfection Procedures
Pressure Tanks and System Controls
Electrical Components and Safety
Continuing Education and Licensing Compliance
Environmental Protection and Ethics
Introduction
,The Texas Water Well Pump Installer licensing examination assesses the knowledge and skills required to install,
maintain, and troubleshoot water well pumping systems in compliance with state regulations. This examination covers
foundational theory and applied professional practice, including pump sizing, well construction standards, disinfection
protocols, and regulatory compliance. Questions are presented in multiple-choice and scenario-based formats to
evaluate both technical competency and real-world decision-making. Emphasis is placed on public health protection,
environmental stewardship, and adherence to Texas Administrative Code requirements. Candidates must demonstrate
understanding of safe installation practices, proper system design, and ethical professional conduct expected of licensed
pump installers in Texas.
SECTION ONE – QUESTIONS 1–50
Question 1
What is the primary purpose of grouting the annular space between a well casing and the borehole?
A. To increase the well's water yield
B. To prevent surface and subsurface contamination from entering the well
C. To reduce the cost of well construction
D. To improve pump efficiency
🟢 Correct Answer: B. To prevent surface and subsurface contamination from entering the well
,🔴 Explanation: Grouting seals the annular space to block contaminants from migrating down the outside of the
casing into the aquifer, protecting groundwater quality .
Question 2
A pump installer is determining the required flow rate for a new residential system. The home has two bathrooms, a
washing machine, a dishwasher, and two outdoor hose bibs. Using the fixture count method, what is the minimum
pump capacity required?
A. 6 GPM
B. 8 GPM
C. 10 GPM
D. 12 GPM
🟢 Correct Answer: D. 12 GPM
🔴 Explanation: The fixture count method allows 1 GPM per fixture. Two bathrooms (toilet, sink, shower each = 6
fixtures), washing machine (1), dishwasher (1), outdoor hose bibs (2), and kitchen sink (1) total 11–12 fixtures,
requiring approximately 12 GPM .
Question 3
, What is the minimum required casing length for a drilled well in unconsolidated formations under Kansas
regulations?
A. 10 feet
B. 15 feet
C. 20 feet
D. 30 feet
🟢 Correct Answer: C. 20 feet
🔴 Explanation: Kansas Administrative Regulations require watertight casing to extend at least 20 feet below ground
level in unconsolidated formations to protect against contamination .
Question 4
A submersible pump is being installed in a well with a dynamic water level of 150 feet. The pressure tank is located
in the basement, 20 feet above ground level. The required pressure at the highest tap is 40 psi. What is the total
pumping head?
A. Approximately 150 feet
B. Approximately 240 feet
C. Approximately 262 feet
D. Approximately 300 feet
