TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
Content Area Weighting:
Content Area Questions Key Topics Weight
System Design and Hydraulics 1-50 Gravity sewer design, pipe sizing, flow velocity, Manning's
equation, infiltration/inflow 20%
Lift Stations and Pumping 51-100 Pump types, wet well operation, controls, force mains, pump
curves, cavitation 20%
Operation and Maintenance 101-150 Preventive maintenance, cleaning methods, sewer inspection,
root control, grease management 20%
Safety and Emergency Response 151-200 Confined space entry, PPE, gas detection, lockout/tagout,
emergency bypass, spill response 20%
Regulations and Administration 201-250 TCEQ rules, Clean Water Act, NPDES permits, record keeping,
ethics, public relations 20%
SECTION 1: REGULATORY FRAMEWORK & TCEQ OVERSIGHT
(Questions 1–15)
Q1. The state agency currently responsible for the oversight of wastewater collection systems and treatment in
Texas is the:
A. Texas Water Quality Board
B. Texas Water Development Board
C. Texas Department of Health
D. Texas Commission on Environmental Quality (TCEQ)
Correct Answer: D. Texas Commission on Environmental Quality (TCEQ)
,TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
Rationale: The Texas Commission on Environmental Quality (TCEQ) has primary regulatory authority over
wastewater systems, including collection systems and treatment plants. TCEQ oversees operator certification,
licensing, training requirements, and examination administration .
Why Wrong:
A - The Texas Water Quality Board was an earlier agency that preceded TCEQ.
B - The Texas Water Development Board focuses on water supply and infrastructure funding, not regulatory
oversight.
C - The Texas Department of Health addresses public health but does not have primary wastewater regulatory
authority.
Q2. All TCEQ occupational licenses require an individual to pass the applicable TCEQ exam to obtain a
license. What is the minimum passing score?
A. 60 percent
B. 65 percent
C. 70 percent
D. 75 percent
Correct Answer: C. 70 percent
Rationale: All TCEQ occupational licenses require an individual to pass the applicable TCEQ exam to obtain a
license, with a minimum score of 70 percent .
Why Wrong:
,TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
A & B - These scores are below the established TCEQ requirement.
D - While some organizations require 75%, TCEQ's official requirement is 70%.
Q3. State licensing regulations for wastewater treatment plant and collection system operators are found in
which section of the Texas Administrative Code?
A. 30 TAC Chapter 26
B. 30 TAC Chapter 30, Subchapter J
C. Federal EPA regulations only
D. Municipal ordinances only
Correct Answer: B. 30 TAC Chapter 30, Subchapter J
Rationale: TCEQ derives its authority to regulate wastewater collection systems from the Texas Water Code
and the Texas Administrative Code (30 TAC), particularly Chapters 30 and 217. The Texas Water Code
Chapter 26 addresses water quality protection and pollution control .
Why Wrong:
A - 30 TAC Chapter 26 addresses water rights and other issues.
C - While EPA regulations apply, state licensing is governed by TAC.
D - Municipal ordinances supplement but do not replace state regulations.
, TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
Q4. Which of the following is a requirement for a Class I Wastewater Collection System Operator license in
Texas?
A. A high school diploma or GED
B. Five years of experience
C. A college degree in engineering
D. Previous Class II certification
Correct Answer: A. A high school diploma or GED
Rationale: A Class I Wastewater Collection license requires a high school diploma or GED with no experience
requirement. This is the entry-level collection system operator classification .
Why Wrong:
B - Five years of experience is required for higher-level certifications.
C - A college degree is not required for Class I licensure.
D - Class I is entry-level; Class II requires prior experience.
Q5. At least one collection supervisor must hold a license class equal to or higher than is required for that
category of collection system. This requirement is found in:
A. Texas Water Code § 26
B. 30 TAC § 30
C. 30 TAC § 30.350
D. TCEQ Rule 217
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
Content Area Weighting:
Content Area Questions Key Topics Weight
System Design and Hydraulics 1-50 Gravity sewer design, pipe sizing, flow velocity, Manning's
equation, infiltration/inflow 20%
Lift Stations and Pumping 51-100 Pump types, wet well operation, controls, force mains, pump
curves, cavitation 20%
Operation and Maintenance 101-150 Preventive maintenance, cleaning methods, sewer inspection,
root control, grease management 20%
Safety and Emergency Response 151-200 Confined space entry, PPE, gas detection, lockout/tagout,
emergency bypass, spill response 20%
Regulations and Administration 201-250 TCEQ rules, Clean Water Act, NPDES permits, record keeping,
ethics, public relations 20%
SECTION 1: REGULATORY FRAMEWORK & TCEQ OVERSIGHT
(Questions 1–15)
Q1. The state agency currently responsible for the oversight of wastewater collection systems and treatment in
Texas is the:
A. Texas Water Quality Board
B. Texas Water Development Board
C. Texas Department of Health
D. Texas Commission on Environmental Quality (TCEQ)
Correct Answer: D. Texas Commission on Environmental Quality (TCEQ)
,TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
Rationale: The Texas Commission on Environmental Quality (TCEQ) has primary regulatory authority over
wastewater systems, including collection systems and treatment plants. TCEQ oversees operator certification,
licensing, training requirements, and examination administration .
Why Wrong:
A - The Texas Water Quality Board was an earlier agency that preceded TCEQ.
B - The Texas Water Development Board focuses on water supply and infrastructure funding, not regulatory
oversight.
C - The Texas Department of Health addresses public health but does not have primary wastewater regulatory
authority.
Q2. All TCEQ occupational licenses require an individual to pass the applicable TCEQ exam to obtain a
license. What is the minimum passing score?
A. 60 percent
B. 65 percent
C. 70 percent
D. 75 percent
Correct Answer: C. 70 percent
Rationale: All TCEQ occupational licenses require an individual to pass the applicable TCEQ exam to obtain a
license, with a minimum score of 70 percent .
Why Wrong:
,TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
A & B - These scores are below the established TCEQ requirement.
D - While some organizations require 75%, TCEQ's official requirement is 70%.
Q3. State licensing regulations for wastewater treatment plant and collection system operators are found in
which section of the Texas Administrative Code?
A. 30 TAC Chapter 26
B. 30 TAC Chapter 30, Subchapter J
C. Federal EPA regulations only
D. Municipal ordinances only
Correct Answer: B. 30 TAC Chapter 30, Subchapter J
Rationale: TCEQ derives its authority to regulate wastewater collection systems from the Texas Water Code
and the Texas Administrative Code (30 TAC), particularly Chapters 30 and 217. The Texas Water Code
Chapter 26 addresses water quality protection and pollution control .
Why Wrong:
A - 30 TAC Chapter 26 addresses water rights and other issues.
C - While EPA regulations apply, state licensing is governed by TAC.
D - Municipal ordinances supplement but do not replace state regulations.
, TEXAS WASTEWATER COLLECTION SYSTEM OPERATOR CLASS I ACTUAL EXAM
2026/2027 | MOST TESTED | TCEQ EDITION | 250 VERIFIED Q&A | MULTIPLE-
CHOICE | DETAILED RATIONALES | PASS GUARANTEED - A+ GRADED
Q4. Which of the following is a requirement for a Class I Wastewater Collection System Operator license in
Texas?
A. A high school diploma or GED
B. Five years of experience
C. A college degree in engineering
D. Previous Class II certification
Correct Answer: A. A high school diploma or GED
Rationale: A Class I Wastewater Collection license requires a high school diploma or GED with no experience
requirement. This is the entry-level collection system operator classification .
Why Wrong:
B - Five years of experience is required for higher-level certifications.
C - A college degree is not required for Class I licensure.
D - Class I is entry-level; Class II requires prior experience.
Q5. At least one collection supervisor must hold a license class equal to or higher than is required for that
category of collection system. This requirement is found in:
A. Texas Water Code § 26
B. 30 TAC § 30
C. 30 TAC § 30.350
D. TCEQ Rule 217
