Texas Water Well Driller License Practice
Exam 100 Questions — Correct Answers + Rationales
Questions 1–100
1. Which Texas agency administers licensing for water well drillers?
A. Texas Department of State Health Services
B. Texas Department of Licensing and Regulation (TDLR)
C. Texas Commission on Environmental Quality (TCEQ)
D. Texas Water Development Board
Correct correct answer with Rationale: B. Texas Department of Licensing and
Regulation (TDLR)
Rationale: TDLR administers Texas licensing for water well drillers and pump installers. TCEQ
has separate regulatory responsibilities, particularly for public water systems.
2. Which Texas Occupations Code chapters contain the primary statutes governing water
well drillers and pump installers?
A. Chapters 1901 and 1902
B. Chapters 1501 and 1502
C. Chapters 2101 and 2102
D. Chapters 3001 and 3002
Correct correct answer with Rationale: A. Chapters 1901 and 1902
Rationale: Texas Occupations Code Chapters 1901 and 1902 provide the statutory framework
for water well drillers and pump installers.
3. Which Texas Administrative Code chapter contains the principal TDLR rules for water
well drillers?
A. 16 TAC Chapter 76
B. 16 TAC Chapter 50
C. 30 TAC Chapter 290
D. 30 TAC Chapter 326
,Correct correct answer with Rationale: A. 16 TAC Chapter 76
Rationale: TDLR's water well driller and pump installer rules are located in Title 16 of the
Texas Administrative Code, Chapter 76.
4. Which endorsement identifies a Texas Water Well Driller?
A. C
B. D
C. W
D. M
Correct correct answer with Rationale: C. W
Rationale: TDLR identifies the Water Wells endorsement as W.
5. Which endorsement applies to monitor wells?
A. M
B. N
C. D
D. C
Correct correct answer with Rationale: A. M
Rationale: The M endorsement is for monitor wells.
6. Which endorsement applies to injection wells?
A. I
B. N
C. J
D. X
Correct correct answer with Rationale: B. N
Rationale: TDLR identifies N as the endorsement for injection wells.
,7. Which endorsement applies to dewatering wells?
A. D
B. W
C. G
D. R
Correct correct answer with Rationale: A. D
Rationale: D is the designation for the Dewatering Well Driller endorsement.
8. Which endorsement applies to closed-loop geothermal wells?
A. G
B. C
C. L
D. E
Correct correct answer with Rationale: B. C
Rationale: C identifies the Closed Loop Geothermal Well Driller endorsement.
9. What is the minimum relevant experience generally required for a new Texas water well
driller license applicant?
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 at least two years of relevant experience
under the supervision of a licensed well driller or pump installer. (TDLR)
10. What examination must be passed before a water well driller license or endorsement
can be issued?
A. General Examination
B. Business Law Examination only
, C. Environmental Chemistry Examination
D. County Licensing Examination
Correct correct answer with Rationale: A. General Examination
Rationale: TDLR requires the General Examination before issuance of a license or endorsement.
11. How many qualifying water-well drillings are required for the Water Wells
endorsement?
A. 5
B. 10
C. 15
D. 25
Correct correct answer with Rationale: C. 15
Rationale: TDLR lists 15 qualifying drillings for the Water Wells endorsement. (TDLR)
12. How many qualifying drillings are required for the Monitor Wells endorsement?
A. 15
B. 25
C. 40
D. 50
Correct correct answer with Rationale: D. 50
Rationale: TDLR requires 50 qualifying monitor-well drillings.
13. How many qualifying drillings are required for the Master License?
A. 50
B. 100
C. 150
D. 215
Correct correct answer with Rationale: D. 215
Rationale: TDLR lists 215 qualifying drillings for the Master License. (TDLR)
Exam 100 Questions — Correct Answers + Rationales
Questions 1–100
1. Which Texas agency administers licensing for water well drillers?
A. Texas Department of State Health Services
B. Texas Department of Licensing and Regulation (TDLR)
C. Texas Commission on Environmental Quality (TCEQ)
D. Texas Water Development Board
Correct correct answer with Rationale: B. Texas Department of Licensing and
Regulation (TDLR)
Rationale: TDLR administers Texas licensing for water well drillers and pump installers. TCEQ
has separate regulatory responsibilities, particularly for public water systems.
2. Which Texas Occupations Code chapters contain the primary statutes governing water
well drillers and pump installers?
A. Chapters 1901 and 1902
B. Chapters 1501 and 1502
C. Chapters 2101 and 2102
D. Chapters 3001 and 3002
Correct correct answer with Rationale: A. Chapters 1901 and 1902
Rationale: Texas Occupations Code Chapters 1901 and 1902 provide the statutory framework
for water well drillers and pump installers.
3. Which Texas Administrative Code chapter contains the principal TDLR rules for water
well drillers?
A. 16 TAC Chapter 76
B. 16 TAC Chapter 50
C. 30 TAC Chapter 290
D. 30 TAC Chapter 326
,Correct correct answer with Rationale: A. 16 TAC Chapter 76
Rationale: TDLR's water well driller and pump installer rules are located in Title 16 of the
Texas Administrative Code, Chapter 76.
4. Which endorsement identifies a Texas Water Well Driller?
A. C
B. D
C. W
D. M
Correct correct answer with Rationale: C. W
Rationale: TDLR identifies the Water Wells endorsement as W.
5. Which endorsement applies to monitor wells?
A. M
B. N
C. D
D. C
Correct correct answer with Rationale: A. M
Rationale: The M endorsement is for monitor wells.
6. Which endorsement applies to injection wells?
A. I
B. N
C. J
D. X
Correct correct answer with Rationale: B. N
Rationale: TDLR identifies N as the endorsement for injection wells.
,7. Which endorsement applies to dewatering wells?
A. D
B. W
C. G
D. R
Correct correct answer with Rationale: A. D
Rationale: D is the designation for the Dewatering Well Driller endorsement.
8. Which endorsement applies to closed-loop geothermal wells?
A. G
B. C
C. L
D. E
Correct correct answer with Rationale: B. C
Rationale: C identifies the Closed Loop Geothermal Well Driller endorsement.
9. What is the minimum relevant experience generally required for a new Texas water well
driller license applicant?
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 at least two years of relevant experience
under the supervision of a licensed well driller or pump installer. (TDLR)
10. What examination must be passed before a water well driller license or endorsement
can be issued?
A. General Examination
B. Business Law Examination only
, C. Environmental Chemistry Examination
D. County Licensing Examination
Correct correct answer with Rationale: A. General Examination
Rationale: TDLR requires the General Examination before issuance of a license or endorsement.
11. How many qualifying water-well drillings are required for the Water Wells
endorsement?
A. 5
B. 10
C. 15
D. 25
Correct correct answer with Rationale: C. 15
Rationale: TDLR lists 15 qualifying drillings for the Water Wells endorsement. (TDLR)
12. How many qualifying drillings are required for the Monitor Wells endorsement?
A. 15
B. 25
C. 40
D. 50
Correct correct answer with Rationale: D. 50
Rationale: TDLR requires 50 qualifying monitor-well drillings.
13. How many qualifying drillings are required for the Master License?
A. 50
B. 100
C. 150
D. 215
Correct correct answer with Rationale: D. 215
Rationale: TDLR lists 215 qualifying drillings for the Master License. (TDLR)
