Texas Water Well Driller License Practice
Exam 2025–2026 Q&A — Questions 1–100
These are original practice questions, not actual or leaked licensing-exam questions. They are
based on current Texas TDLR requirements, laws, rules, examination information, and technical
guidance. TDLR currently lists Water Well Driller endorsements including Water Wells,
Monitor Wells, Injection Wells, Dewatering Wells, and Closed Loop Geothermal Wells.
(tdlr.texas.gov)
1. Which Texas agency administers the Water Well Driller and Pump Installer
licensing program?
A. Texas Department of Licensing and Regulation (TDLR)
B. Texas Department of Transportation
C. Texas Department of Insurance
D. Texas Workforce Commission
Correct correct answer with Rationale: A. Texas Department of Licensing and
Regulation (TDLR)
Rationale: TDLR administers the Texas Water Well Drillers and Pump Installers licensing
program, including licensing applications, examinations, and technical guidance. (tdlr.texas.gov)
2. Which Texas Occupations Code chapter contains the Water Well Drillers
Law?
A. Chapter 51
B. Chapter 1901
C. Chapter 1902
D. Chapter 76
Correct correct answer with Rationale: B. Chapter 1901
Rationale: TDLR identifies Texas Occupations Code Chapter 1901 as the Water Well Drillers
Law. Chapter 1902 addresses Pump Installers Law. (tdlr.texas.gov)
3. Which Texas Administrative Code chapter contains the Water Well Drillers
and Pump Installers Administrative Rules?
,A. Chapter 60
B. Chapter 51
C. Chapter 76
D. Chapter 1901
Correct correct answer with Rationale: C. Chapter 76
Rationale: TDLR identifies Texas Administrative Code Chapter 76 as the Water Well Drillers
and Pump Installers Administrative Rules. (tdlr.texas.gov)
4. Which endorsement is offered by TDLR for a general water-well drilling
license?
A. W — Water Wells
B. P — Single Phase Pumps
C. K — Three-Phase Pumps
D. T — Turbine Pump
Correct correct answer with Rationale: A. W — Water Wells
Rationale: TDLR lists Water Wells (W) among its Water Well Driller endorsements. Pump
endorsements are separate categories. (tdlr.texas.gov)
5. Which of the following is a Water Well Driller endorsement offered by TDLR?
A. Monitor Wells
B. Single Phase Pumps
C. Three-Phase Pumps
D. Windmills
Correct correct answer with Rationale: A. Monitor Wells
Rationale: TDLR's Water Well Driller endorsements include Water Wells, Monitor Wells,
Injection Wells, Dewatering Wells, and Closed Loop Geothermal Wells. (tdlr.texas.gov)
6. How much relevant experience does TDLR generally require for a new Water
Well Driller/Pump Installer license?
,A. 6 months
B. 1 year
C. 2 years
D. 5 years
Correct correct answer with Rationale: C. 2 years
Rationale: TDLR states that applicants must have a minimum of two years of relevant
experience under the supervision of a licensed Water Well Driller/Pump Installer.
(tdlr.texas.gov)
7. How many qualifying water-well drillings are listed by TDLR for the Water
Wells (W) endorsement?
A. 10
B. 15
C. 25
D. 50
Correct correct answer with Rationale: B. 15
Rationale: TDLR lists 15 qualifying drillings for the Water Wells (W) endorsement.
(tdlr.texas.gov)
8. How many qualifying drillings are listed for the Monitor Wells (M)
endorsement?
A. 15
B. 25
C. 40
D. 50
Correct correct answer with Rationale: D. 50
Rationale: TDLR lists 50 qualifying drillings for the Monitor Wells endorsement.
(tdlr.texas.gov)
9. How many qualifying drillings are required for the Injection Wells (N)
endorsement?
, A. 15
B. 25
C. 50
D. 100
Correct correct answer with Rationale: C. 50
Rationale: TDLR lists 50 qualifying drillings for the Injection Wells endorsement.
(tdlr.texas.gov)
10. How many qualifying drillings are required for the Dewatering Wells (D)
endorsement?
A. 10
B. 15
C. 30
D. 50
Correct correct answer with Rationale: D. 50
Rationale: TDLR's current experience table specifies 50 qualifying drillings for the Dewatering
Wells endorsement. (tdlr.texas.gov)
11. How many qualifying drillings are required for the Closed Loop Geothermal
Wells (C) endorsement?
A. 15
B. 25
C. 50
D. 75
Correct correct answer with Rationale: C. 50
Rationale: TDLR lists 50 qualifying drillings for the Closed Loop Geothermal Wells
endorsement. (tdlr.texas.gov)
12. How many qualifying drillings are required for the Master Water Well
Driller license?
Exam 2025–2026 Q&A — Questions 1–100
These are original practice questions, not actual or leaked licensing-exam questions. They are
based on current Texas TDLR requirements, laws, rules, examination information, and technical
guidance. TDLR currently lists Water Well Driller endorsements including Water Wells,
Monitor Wells, Injection Wells, Dewatering Wells, and Closed Loop Geothermal Wells.
(tdlr.texas.gov)
1. Which Texas agency administers the Water Well Driller and Pump Installer
licensing program?
A. Texas Department of Licensing and Regulation (TDLR)
B. Texas Department of Transportation
C. Texas Department of Insurance
D. Texas Workforce Commission
Correct correct answer with Rationale: A. Texas Department of Licensing and
Regulation (TDLR)
Rationale: TDLR administers the Texas Water Well Drillers and Pump Installers licensing
program, including licensing applications, examinations, and technical guidance. (tdlr.texas.gov)
2. Which Texas Occupations Code chapter contains the Water Well Drillers
Law?
A. Chapter 51
B. Chapter 1901
C. Chapter 1902
D. Chapter 76
Correct correct answer with Rationale: B. Chapter 1901
Rationale: TDLR identifies Texas Occupations Code Chapter 1901 as the Water Well Drillers
Law. Chapter 1902 addresses Pump Installers Law. (tdlr.texas.gov)
3. Which Texas Administrative Code chapter contains the Water Well Drillers
and Pump Installers Administrative Rules?
,A. Chapter 60
B. Chapter 51
C. Chapter 76
D. Chapter 1901
Correct correct answer with Rationale: C. Chapter 76
Rationale: TDLR identifies Texas Administrative Code Chapter 76 as the Water Well Drillers
and Pump Installers Administrative Rules. (tdlr.texas.gov)
4. Which endorsement is offered by TDLR for a general water-well drilling
license?
A. W — Water Wells
B. P — Single Phase Pumps
C. K — Three-Phase Pumps
D. T — Turbine Pump
Correct correct answer with Rationale: A. W — Water Wells
Rationale: TDLR lists Water Wells (W) among its Water Well Driller endorsements. Pump
endorsements are separate categories. (tdlr.texas.gov)
5. Which of the following is a Water Well Driller endorsement offered by TDLR?
A. Monitor Wells
B. Single Phase Pumps
C. Three-Phase Pumps
D. Windmills
Correct correct answer with Rationale: A. Monitor Wells
Rationale: TDLR's Water Well Driller endorsements include Water Wells, Monitor Wells,
Injection Wells, Dewatering Wells, and Closed Loop Geothermal Wells. (tdlr.texas.gov)
6. How much relevant experience does TDLR generally require for a new Water
Well Driller/Pump Installer license?
,A. 6 months
B. 1 year
C. 2 years
D. 5 years
Correct correct answer with Rationale: C. 2 years
Rationale: TDLR states that applicants must have a minimum of two years of relevant
experience under the supervision of a licensed Water Well Driller/Pump Installer.
(tdlr.texas.gov)
7. How many qualifying water-well drillings are listed by TDLR for the Water
Wells (W) endorsement?
A. 10
B. 15
C. 25
D. 50
Correct correct answer with Rationale: B. 15
Rationale: TDLR lists 15 qualifying drillings for the Water Wells (W) endorsement.
(tdlr.texas.gov)
8. How many qualifying drillings are listed for the Monitor Wells (M)
endorsement?
A. 15
B. 25
C. 40
D. 50
Correct correct answer with Rationale: D. 50
Rationale: TDLR lists 50 qualifying drillings for the Monitor Wells endorsement.
(tdlr.texas.gov)
9. How many qualifying drillings are required for the Injection Wells (N)
endorsement?
, A. 15
B. 25
C. 50
D. 100
Correct correct answer with Rationale: C. 50
Rationale: TDLR lists 50 qualifying drillings for the Injection Wells endorsement.
(tdlr.texas.gov)
10. How many qualifying drillings are required for the Dewatering Wells (D)
endorsement?
A. 10
B. 15
C. 30
D. 50
Correct correct answer with Rationale: D. 50
Rationale: TDLR's current experience table specifies 50 qualifying drillings for the Dewatering
Wells endorsement. (tdlr.texas.gov)
11. How many qualifying drillings are required for the Closed Loop Geothermal
Wells (C) endorsement?
A. 15
B. 25
C. 50
D. 75
Correct correct answer with Rationale: C. 50
Rationale: TDLR lists 50 qualifying drillings for the Closed Loop Geothermal Wells
endorsement. (tdlr.texas.gov)
12. How many qualifying drillings are required for the Master Water Well
Driller license?
