New Texas Water Well Driller License Practice
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026|2028 Q&A |
Instant Download Pdf
Q1
According to the Texas Department of Licensing and Regulation (TDLR) Occupations
Code Chapter 1901, within how many days after completing the drilling of a water
well must a licensed driller submit the State of Texas Well Report to TDLR and the
landowner?
A) 14 days
B) 30 days
C) 60 days
D) 90 days
Correct Answer: C) 60 days
Explanation: Texas Occupations Code § 1901.251 specifies that the driller must deliver or
transmit a copy of the State of Texas Well Report to the executive director of TDLR and to
the person for whom the well was drilled within 60 days of completion.
,Q2
What is the minimum required depth for the annular space seal on a standard
domestic water well drilled in Texas, unless specific local Groundwater Conservation
District (GCD) rules require deeper?
A) 10 feet
B) 18 feet
C) 25 feet
D) 50 feet
Correct Answer: B) 18 feet
Explanation: 16 Texas Administrative Code (TAC) § 76.100 requires the annular space
around the casing to be filled with an approved sealing material (such as cement or
bentonite) from land surface to a minimum depth of 18 feet.
Q3
Under TDLR 16 TAC Chapter 76 standards, what is the minimum required height that
a well casing must extend above the finished ground elevation or concrete slab?
A) 6 inches
B) 12 inches
, C) 18 inches
D) 24 inches
Correct Answer: B) 12 inches
Explanation: Well casing must extend at least 12 inches above the natural ground surface
or top of the concrete slab to prevent surface runoff contamination from entering the well
head.
Q4
What is the minimum isolation setback distance required between a newly drilled
water well and a standard septic tank in Texas?
A) 25 feet
B) 50 feet
C) 100 feet
D) 150 feet
Correct Answer: B) 50 feet
Explanation: 16 TAC § 76.1000 requires a minimum isolation distance of 50 feet from a
septic tank, sewage holding tank, or sewer line constructed of approved watertight pipe.
Q5
, What is the minimum setback distance required between a water well and a septic
tank drain field (absorption field) or spray irrigation field?
A) 50 feet
B) 75 feet
C) 100 feet
D) 150 feet
Correct Answer: C) 100 feet
Explanation: Well locations must maintain at least 100 feet of separation from soil
absorption systems (septic drain fields), evapotranspiration beds, or animal feedlots.
Q6
When completing a surface completion slab (sloped concrete pad) around a water
well casing, what are the minimum required dimensions for thickness and width
according to TDLR rules?
A) 2 inches thick, extending 1 foot in all directions
B) 4 inches thick, extending 2 feet in all directions
C) 6 inches thick, extending 3 feet in all directions
D) 8 inches thick, extending 4 feet in all directions
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026|2028 Q&A |
Instant Download Pdf
Q1
According to the Texas Department of Licensing and Regulation (TDLR) Occupations
Code Chapter 1901, within how many days after completing the drilling of a water
well must a licensed driller submit the State of Texas Well Report to TDLR and the
landowner?
A) 14 days
B) 30 days
C) 60 days
D) 90 days
Correct Answer: C) 60 days
Explanation: Texas Occupations Code § 1901.251 specifies that the driller must deliver or
transmit a copy of the State of Texas Well Report to the executive director of TDLR and to
the person for whom the well was drilled within 60 days of completion.
,Q2
What is the minimum required depth for the annular space seal on a standard
domestic water well drilled in Texas, unless specific local Groundwater Conservation
District (GCD) rules require deeper?
A) 10 feet
B) 18 feet
C) 25 feet
D) 50 feet
Correct Answer: B) 18 feet
Explanation: 16 Texas Administrative Code (TAC) § 76.100 requires the annular space
around the casing to be filled with an approved sealing material (such as cement or
bentonite) from land surface to a minimum depth of 18 feet.
Q3
Under TDLR 16 TAC Chapter 76 standards, what is the minimum required height that
a well casing must extend above the finished ground elevation or concrete slab?
A) 6 inches
B) 12 inches
, C) 18 inches
D) 24 inches
Correct Answer: B) 12 inches
Explanation: Well casing must extend at least 12 inches above the natural ground surface
or top of the concrete slab to prevent surface runoff contamination from entering the well
head.
Q4
What is the minimum isolation setback distance required between a newly drilled
water well and a standard septic tank in Texas?
A) 25 feet
B) 50 feet
C) 100 feet
D) 150 feet
Correct Answer: B) 50 feet
Explanation: 16 TAC § 76.1000 requires a minimum isolation distance of 50 feet from a
septic tank, sewage holding tank, or sewer line constructed of approved watertight pipe.
Q5
, What is the minimum setback distance required between a water well and a septic
tank drain field (absorption field) or spray irrigation field?
A) 50 feet
B) 75 feet
C) 100 feet
D) 150 feet
Correct Answer: C) 100 feet
Explanation: Well locations must maintain at least 100 feet of separation from soil
absorption systems (septic drain fields), evapotranspiration beds, or animal feedlots.
Q6
When completing a surface completion slab (sloped concrete pad) around a water
well casing, what are the minimum required dimensions for thickness and width
according to TDLR rules?
A) 2 inches thick, extending 1 foot in all directions
B) 4 inches thick, extending 2 feet in all directions
C) 6 inches thick, extending 3 feet in all directions
D) 8 inches thick, extending 4 feet in all directions
