TDLR – WATER WELL DRILLER EXAMINATION (UTILITY DRILLING TRADE, NOT WASTE WATER)– QUESTIONS AND
ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD AND PASS | LATEST
EXAM UPDATE 2026/2027
Core Domains
Licensing Requirements and Regulatory Framework
Well Construction Standards and Methods
Casing, Grouting, and Well Completion
Groundwater Hydrology and Aquifer Characteristics
Pump Installation and System Design
Well Development, Testing, and Maintenance
Abandoned Well Plugging and Environmental Protection
Safety Standards and Professional Ethics
Introduction
The TDLR Water Well Driller Examination assesses the knowledge and skills required to safely and legally construct,
complete, and maintain water wells in Texas. This comprehensive multiple-choice assessment evaluates competency
across regulatory compliance, well construction techniques, groundwater science, pump systems, and environmental
,protection. Questions include scenario-based applications requiring critical thinking and real-world decision-making.
Candidates must demonstrate mastery of Texas Occupations Code Chapters 1901 and 1902, Texas Administrative Code
Title 16 Chapter 76, and industry best practices. The exam ensures licensed professionals possess the technical expertise
and ethical standards necessary to protect groundwater resources and serve the public interest.
SECTION ONE: QUESTIONS 1–50
Question 1
Which Texas agency is primarily responsible for licensing water well drillers and pump installers?
A. Texas Commission on Environmental Quality (TCEQ)
B. Texas Department of Licensing and Regulation (TDLR)
C. Texas Water Development Board (TWDB)
D. Railroad Commission of Texas
🟢 Correct Answer: B. Texas Department of Licensing and Regulation (TDLR)
🔴 Explanation: TDLR administers the Water Well Drillers and Pump Installers Program under Texas Occupations
Code Chapters 1901 and 1902 and 16 Texas Administrative Code Chapter 76. TCEQ oversees public water supply well
construction while TWDB manages water resources data.
,Question 2
What is the minimum age requirement for obtaining a Texas Well Driller license?
A. 16 years
B. 18 years
C. 21 years
D. 25 years
🟢 Correct Answer: B. 18 years
🔴 Explanation: Texas Occupations Code §1902.102 requires applicants to be at least 18 years of age to obtain a well
driller license. Apprentices must also meet this age requirement.
Question 3
How many years of drilling experience under a licensed driller are required before taking the Texas well driller
licensing exam?
, A. 6 months
B. 1 year
C. 2 years
D. 4 years
🟢 Correct Answer: C. 2 years
🔴 Explanation: The Texas well driller program mandates that all applicants have at least two years of drilling
experience under the supervision of a licensed Well Driller before taking the licensing exam.
Question 4
Which license class is required to repair or install water well pumps in Texas?
A. Water Well Driller
B. Pump Installer
C. Well Driller (unrestricted)
D. Master Driller
🟢 Correct Answer: B. Pump Installer
ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD AND PASS | LATEST
EXAM UPDATE 2026/2027
Core Domains
Licensing Requirements and Regulatory Framework
Well Construction Standards and Methods
Casing, Grouting, and Well Completion
Groundwater Hydrology and Aquifer Characteristics
Pump Installation and System Design
Well Development, Testing, and Maintenance
Abandoned Well Plugging and Environmental Protection
Safety Standards and Professional Ethics
Introduction
The TDLR Water Well Driller Examination assesses the knowledge and skills required to safely and legally construct,
complete, and maintain water wells in Texas. This comprehensive multiple-choice assessment evaluates competency
across regulatory compliance, well construction techniques, groundwater science, pump systems, and environmental
,protection. Questions include scenario-based applications requiring critical thinking and real-world decision-making.
Candidates must demonstrate mastery of Texas Occupations Code Chapters 1901 and 1902, Texas Administrative Code
Title 16 Chapter 76, and industry best practices. The exam ensures licensed professionals possess the technical expertise
and ethical standards necessary to protect groundwater resources and serve the public interest.
SECTION ONE: QUESTIONS 1–50
Question 1
Which Texas agency is primarily responsible for licensing water well drillers and pump installers?
A. Texas Commission on Environmental Quality (TCEQ)
B. Texas Department of Licensing and Regulation (TDLR)
C. Texas Water Development Board (TWDB)
D. Railroad Commission of Texas
🟢 Correct Answer: B. Texas Department of Licensing and Regulation (TDLR)
🔴 Explanation: TDLR administers the Water Well Drillers and Pump Installers Program under Texas Occupations
Code Chapters 1901 and 1902 and 16 Texas Administrative Code Chapter 76. TCEQ oversees public water supply well
construction while TWDB manages water resources data.
,Question 2
What is the minimum age requirement for obtaining a Texas Well Driller license?
A. 16 years
B. 18 years
C. 21 years
D. 25 years
🟢 Correct Answer: B. 18 years
🔴 Explanation: Texas Occupations Code §1902.102 requires applicants to be at least 18 years of age to obtain a well
driller license. Apprentices must also meet this age requirement.
Question 3
How many years of drilling experience under a licensed driller are required before taking the Texas well driller
licensing exam?
, A. 6 months
B. 1 year
C. 2 years
D. 4 years
🟢 Correct Answer: C. 2 years
🔴 Explanation: The Texas well driller program mandates that all applicants have at least two years of drilling
experience under the supervision of a licensed Well Driller before taking the licensing exam.
Question 4
Which license class is required to repair or install water well pumps in Texas?
A. Water Well Driller
B. Pump Installer
C. Well Driller (unrestricted)
D. Master Driller
🟢 Correct Answer: B. Pump Installer
