TEXAS IRRIGATOR LICENSE EXAM COMPREHENSIVE CERTIFICATION
PRACTICE TEST 2026/2027 – TCEQ ALIGNED |200 QUESTIONS WITH
VERIFIED ANSWERS & DETAILED RATIONALES
GRADED A+ | 8 CORE DOMAINS
DOMAIN 1: TCEQ REGULATIONS & LICENSING REQUIREMENTS (Questions 1-25)
Q1. Which agency is responsible for regulating landscape irrigators in Texas?
A) Texas Department of Agriculture (TDA)
B) Texas Commission on Environmental Quality (TCEQ)
C) Texas Water Development Board (TWDB)
D) Texas Department of Licensing and Regulation (TDLR)
Correct Answer: B
Rationale: The Texas Commission on Environmental Quality (TCEQ) is the state
agency responsible for regulating landscape irrigators, irrigation technicians, and
irrigation inspectors in Texas. TCEQ enforces the rules found in 30 Texas
Administrative Code (TAC) Chapter 344, which governs landscape irrigation
practices, licensing requirements, and installation standards. The TCEQ also
administers the licensing examinations and issues occupational licenses for
irrigation professionals.
Q2. Under Texas law, what is the minimum score required to pass each section of
the TCEQ Irrigator License Exam?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: The TCEQ requires a minimum passing score of 70% for each section of
the irrigator license examination. Candidates must achieve at least 70% on all
sections to successfully pass the exam and become eligible for licensure. This
ensures that licensed irrigators have demonstrated sufficient knowledge across all
critical areas of irrigation practice.
1
,Q3. What is the primary source of regulations for landscape irrigators in Texas?
A) Texas Water Code Chapter 37
B) 30 TAC Chapter 344
C) Texas Occupations Code Chapter 1903
D) 16 TAC Chapter 30
Correct Answer: B
Rationale: 30 Texas Administrative Code (TAC) Chapter 344 contains the
comprehensive rules, regulations, and statutes for licensed irrigators in Texas.
This chapter covers licensing requirements, installation standards, backflow
prevention, water conservation, and enforcement. While Texas Occupations Code
Chapter 1903 and Texas Water Code Chapter 37 also address irrigation, the
specific technical rules are found in 30 TAC Chapter 344.
Q4. Which of the following activities requires a valid Texas Landscape Irrigator
License?
A) Mowing a lawn
B) Selling an irrigation system design to a client
C) Pruning trees on a residential property
D) Applying fertilizer to a golf course
Correct Answer: B
Rationale: Selling, designing, offering consultations, installing, maintaining,
altering, repairing, or servicing an irrigation system—including connecting such a
system to any water supply—requires a valid irrigator license issued by the TCEQ.
Mowing, pruning, and fertilizing are landscaping activities that do not involve
irrigation system work and therefore do not require an irrigator license.
Q5. According to Texas law, a property owner who installs an irrigation system on
their own residential property:
A) Must hold a valid irrigator license
2
,B) Is exempt from licensing but must meet specific installation standards
C) Must hire a licensed irrigator for all work
D) Is exempt from all regulations
Correct Answer: B
Rationale: A property owner is not required to be licensed if performing irrigation
work on a premises owned or occupied as their home. However, they must still
comply with specific standards including spacing requirements, water pressure
requirements, restrictions on spraying over impervious materials, rain/moisture
shut-off device requirements, and isolation valve requirements as specified in 30
TAC §344.62. Municipalities may adopt more stringent requirements.
Q6. How often must a licensed irrigator renew their license with the TCEQ?
A) Every year
B) Every two years
C) Every three years
D) Every five years
Correct Answer: C
Rationale: A licensed irrigator must renew their license every three years. License
renewal requires completion of continuing education hours as specified by TCEQ
rules, payment of the renewal fee, and submission of a renewal application.
Failure to renew on time results in license expiration and the individual must then
reapply and retake the examination.
Q7. What is the purpose of the Irrigator Advisory Council (IAC)?
A) To enforce irrigation regulations
B) To advise the TCEQ on matters relating to irrigation licensing and regulations
C) To issue irrigator licenses
D) To inspect irrigation systems for compliance
Correct Answer: B
3
, Rationale: The Irrigator Advisory Council (IAC) is a group of licensed irrigators and
public members that advises the TCEQ on matters relating to the licensing and
regulation of irrigators. The council provides recommendations on exam content,
rule changes, continuing education requirements, and other issues affecting the
irrigation industry in Texas.
Q8. Which license allows an individual to connect an irrigation system to a water
supply while working under the supervision of a licensed irrigator?
A) Landscape Irrigator
B) Irrigation Technician
C) Irrigation Inspector
D) Plumbing Inspector
Correct Answer: B
Rationale: An Irrigation Technician (IT) license allows an individual to connect an
irrigation system to a water supply—including installing a backflow prevention
device—and to install, maintain, alter, repair, or service an irrigation system
under the supervision of a licensed irrigator. The irrigator license is a higher-level
license that does not require supervision.
Q9. Who is responsible for verifying that irrigation permits have been obtained
and that systems comply with TCEQ rules?
A) Landscape Irrigator
B) Irrigation Technician
C) Irrigation Inspector
D) Property Owner
Correct Answer: C
Rationale: An Irrigation Inspector (II) is responsible for verifying that permits have
been obtained, inspecting irrigation systems, determining compliance with TCEQ
rule requirements, ensuring appropriate backflow prevention devices are
installed, providing test results to water purveyors, and investigating complaints.
Inspectors must hold a valid irrigation inspector license issued by the TCEQ.
4
PRACTICE TEST 2026/2027 – TCEQ ALIGNED |200 QUESTIONS WITH
VERIFIED ANSWERS & DETAILED RATIONALES
GRADED A+ | 8 CORE DOMAINS
DOMAIN 1: TCEQ REGULATIONS & LICENSING REQUIREMENTS (Questions 1-25)
Q1. Which agency is responsible for regulating landscape irrigators in Texas?
A) Texas Department of Agriculture (TDA)
B) Texas Commission on Environmental Quality (TCEQ)
C) Texas Water Development Board (TWDB)
D) Texas Department of Licensing and Regulation (TDLR)
Correct Answer: B
Rationale: The Texas Commission on Environmental Quality (TCEQ) is the state
agency responsible for regulating landscape irrigators, irrigation technicians, and
irrigation inspectors in Texas. TCEQ enforces the rules found in 30 Texas
Administrative Code (TAC) Chapter 344, which governs landscape irrigation
practices, licensing requirements, and installation standards. The TCEQ also
administers the licensing examinations and issues occupational licenses for
irrigation professionals.
Q2. Under Texas law, what is the minimum score required to pass each section of
the TCEQ Irrigator License Exam?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: The TCEQ requires a minimum passing score of 70% for each section of
the irrigator license examination. Candidates must achieve at least 70% on all
sections to successfully pass the exam and become eligible for licensure. This
ensures that licensed irrigators have demonstrated sufficient knowledge across all
critical areas of irrigation practice.
1
,Q3. What is the primary source of regulations for landscape irrigators in Texas?
A) Texas Water Code Chapter 37
B) 30 TAC Chapter 344
C) Texas Occupations Code Chapter 1903
D) 16 TAC Chapter 30
Correct Answer: B
Rationale: 30 Texas Administrative Code (TAC) Chapter 344 contains the
comprehensive rules, regulations, and statutes for licensed irrigators in Texas.
This chapter covers licensing requirements, installation standards, backflow
prevention, water conservation, and enforcement. While Texas Occupations Code
Chapter 1903 and Texas Water Code Chapter 37 also address irrigation, the
specific technical rules are found in 30 TAC Chapter 344.
Q4. Which of the following activities requires a valid Texas Landscape Irrigator
License?
A) Mowing a lawn
B) Selling an irrigation system design to a client
C) Pruning trees on a residential property
D) Applying fertilizer to a golf course
Correct Answer: B
Rationale: Selling, designing, offering consultations, installing, maintaining,
altering, repairing, or servicing an irrigation system—including connecting such a
system to any water supply—requires a valid irrigator license issued by the TCEQ.
Mowing, pruning, and fertilizing are landscaping activities that do not involve
irrigation system work and therefore do not require an irrigator license.
Q5. According to Texas law, a property owner who installs an irrigation system on
their own residential property:
A) Must hold a valid irrigator license
2
,B) Is exempt from licensing but must meet specific installation standards
C) Must hire a licensed irrigator for all work
D) Is exempt from all regulations
Correct Answer: B
Rationale: A property owner is not required to be licensed if performing irrigation
work on a premises owned or occupied as their home. However, they must still
comply with specific standards including spacing requirements, water pressure
requirements, restrictions on spraying over impervious materials, rain/moisture
shut-off device requirements, and isolation valve requirements as specified in 30
TAC §344.62. Municipalities may adopt more stringent requirements.
Q6. How often must a licensed irrigator renew their license with the TCEQ?
A) Every year
B) Every two years
C) Every three years
D) Every five years
Correct Answer: C
Rationale: A licensed irrigator must renew their license every three years. License
renewal requires completion of continuing education hours as specified by TCEQ
rules, payment of the renewal fee, and submission of a renewal application.
Failure to renew on time results in license expiration and the individual must then
reapply and retake the examination.
Q7. What is the purpose of the Irrigator Advisory Council (IAC)?
A) To enforce irrigation regulations
B) To advise the TCEQ on matters relating to irrigation licensing and regulations
C) To issue irrigator licenses
D) To inspect irrigation systems for compliance
Correct Answer: B
3
, Rationale: The Irrigator Advisory Council (IAC) is a group of licensed irrigators and
public members that advises the TCEQ on matters relating to the licensing and
regulation of irrigators. The council provides recommendations on exam content,
rule changes, continuing education requirements, and other issues affecting the
irrigation industry in Texas.
Q8. Which license allows an individual to connect an irrigation system to a water
supply while working under the supervision of a licensed irrigator?
A) Landscape Irrigator
B) Irrigation Technician
C) Irrigation Inspector
D) Plumbing Inspector
Correct Answer: B
Rationale: An Irrigation Technician (IT) license allows an individual to connect an
irrigation system to a water supply—including installing a backflow prevention
device—and to install, maintain, alter, repair, or service an irrigation system
under the supervision of a licensed irrigator. The irrigator license is a higher-level
license that does not require supervision.
Q9. Who is responsible for verifying that irrigation permits have been obtained
and that systems comply with TCEQ rules?
A) Landscape Irrigator
B) Irrigation Technician
C) Irrigation Inspector
D) Property Owner
Correct Answer: C
Rationale: An Irrigation Inspector (II) is responsible for verifying that permits have
been obtained, inspecting irrigation systems, determining compliance with TCEQ
rule requirements, ensuring appropriate backflow prevention devices are
installed, providing test results to water purveyors, and investigating complaints.
Inspectors must hold a valid irrigation inspector license issued by the TCEQ.
4
