TCEQ Wastewater Class D License Prep Actual Exam 2026/2027
| Questions with Correct Answers | Comprehensive Practice
Test Aligned with TCEQ Class D Wastewater Operator
Certification Blueprint | Pass Guaranteed - A+ Graded
SECTION 1 — STATUTES, RULES & LICENSING
1. What is the primary state agency responsible for regulating
wastewater discharges in Texas?
A. EPA
B. TCEQ
C. OSHA
D. TxDOT
Answer: B. TCEQ
Rationale: The Texas Commission on Environmental Quality regulates
wastewater discharges and wastewater operator licensing in Texas.
2. What does TCEQ stand for?
A. Texas Council for Environmental Quality
B. Texas Commission on Environmental Quality
C. Texas Committee for Environmental Regulations
D. Texas Commission on Engineering Quality
Answer: B. Texas Commission on Environmental Quality
Rationale: TCEQ is the state environmental regulatory agency
responsible for numerous water, air, and waste programs.
,3. What is the main purpose of wastewater treatment?
A. Increase wastewater temperature
B. Protect public health and the environment
C. Increase wastewater flow
D. Produce drinking water directly
Answer: B. Protect public health and the environment
Rationale: Treatment removes contaminants before wastewater is
discharged or reused.
4. Which type of license is specifically associated with wastewater
treatment plant operation at the entry level?
A. Class D
B. Class IV
C. Class A Collection
D. Class E Water
Answer: A. Class D
Rationale: TCEQ recognizes Class D as an entry-level wastewater
treatment plant operator license.
5. What education requirement does TCEQ list for a regular Class D
wastewater license?
A. Bachelor's degree
B. Associate degree
C. High school diploma or GED
D. Master's degree
,Answer: C. High school diploma or GED
Rationale: TCEQ lists a high school diploma or GED and no work-
experience requirement for Class D. (TCEQ)
6. What work-experience requirement is listed for a Class D
wastewater license?
A. Six months
B. One year
C. Two years
D. None
Answer: D. None
Rationale: TCEQ lists no work-experience requirement for Class D.
(TCEQ)
7. What training course is required for a Class D wastewater license?
A. Advanced Wastewater Management
B. Basic Wastewater Operation
C. Activated Sludge II
D. Wastewater Laboratory III
Answer: B. Basic Wastewater Operation
Rationale: TCEQ lists Basic Wastewater Operation as the required
training for Class D. (TCEQ)
8. What is the minimum passing score identified by TCEQ for
occupational licensing examinations?
A. 50%
B. 60%
, C. 70%
D. 90%
Answer: C. 70%
Rationale: TCEQ's wastewater licensing requirements state that
applicable occupational licensing exams require a minimum score of 70
percent. (TCEQ)
9. Which organization establishes federal environmental requirements
that may apply to wastewater discharges?
A. EPA
B. FEMA
C. FAA
D. DOT
Answer: A. EPA
Rationale: The U.S. Environmental Protection Agency establishes and
administers major federal environmental requirements, while TCEQ
implements applicable state programs.
10. What is a wastewater discharge permit primarily intended to
control?
A. Employee salaries
B. Wastewater discharges and their quality
C. Electricity consumption
D. Vehicle registration
Answer: B. Wastewater discharges and their quality
Rationale: Permits establish requirements governing authorized
wastewater discharges.
| Questions with Correct Answers | Comprehensive Practice
Test Aligned with TCEQ Class D Wastewater Operator
Certification Blueprint | Pass Guaranteed - A+ Graded
SECTION 1 — STATUTES, RULES & LICENSING
1. What is the primary state agency responsible for regulating
wastewater discharges in Texas?
A. EPA
B. TCEQ
C. OSHA
D. TxDOT
Answer: B. TCEQ
Rationale: The Texas Commission on Environmental Quality regulates
wastewater discharges and wastewater operator licensing in Texas.
2. What does TCEQ stand for?
A. Texas Council for Environmental Quality
B. Texas Commission on Environmental Quality
C. Texas Committee for Environmental Regulations
D. Texas Commission on Engineering Quality
Answer: B. Texas Commission on Environmental Quality
Rationale: TCEQ is the state environmental regulatory agency
responsible for numerous water, air, and waste programs.
,3. What is the main purpose of wastewater treatment?
A. Increase wastewater temperature
B. Protect public health and the environment
C. Increase wastewater flow
D. Produce drinking water directly
Answer: B. Protect public health and the environment
Rationale: Treatment removes contaminants before wastewater is
discharged or reused.
4. Which type of license is specifically associated with wastewater
treatment plant operation at the entry level?
A. Class D
B. Class IV
C. Class A Collection
D. Class E Water
Answer: A. Class D
Rationale: TCEQ recognizes Class D as an entry-level wastewater
treatment plant operator license.
5. What education requirement does TCEQ list for a regular Class D
wastewater license?
A. Bachelor's degree
B. Associate degree
C. High school diploma or GED
D. Master's degree
,Answer: C. High school diploma or GED
Rationale: TCEQ lists a high school diploma or GED and no work-
experience requirement for Class D. (TCEQ)
6. What work-experience requirement is listed for a Class D
wastewater license?
A. Six months
B. One year
C. Two years
D. None
Answer: D. None
Rationale: TCEQ lists no work-experience requirement for Class D.
(TCEQ)
7. What training course is required for a Class D wastewater license?
A. Advanced Wastewater Management
B. Basic Wastewater Operation
C. Activated Sludge II
D. Wastewater Laboratory III
Answer: B. Basic Wastewater Operation
Rationale: TCEQ lists Basic Wastewater Operation as the required
training for Class D. (TCEQ)
8. What is the minimum passing score identified by TCEQ for
occupational licensing examinations?
A. 50%
B. 60%
, C. 70%
D. 90%
Answer: C. 70%
Rationale: TCEQ's wastewater licensing requirements state that
applicable occupational licensing exams require a minimum score of 70
percent. (TCEQ)
9. Which organization establishes federal environmental requirements
that may apply to wastewater discharges?
A. EPA
B. FEMA
C. FAA
D. DOT
Answer: A. EPA
Rationale: The U.S. Environmental Protection Agency establishes and
administers major federal environmental requirements, while TCEQ
implements applicable state programs.
10. What is a wastewater discharge permit primarily intended to
control?
A. Employee salaries
B. Wastewater discharges and their quality
C. Electricity consumption
D. Vehicle registration
Answer: B. Wastewater discharges and their quality
Rationale: Permits establish requirements governing authorized
wastewater discharges.
