Texas Plumbing Licensing Exam
Full-Length Practice Exam 150 Questions
with Detailed Rationales
Table of Contents
Part I: Licensing Laws and Regulations (Questions 1–25)
● A. TSBPE Authority and Jurisdiction
● B. License Types and Classifications
● C. Experience and Eligibility Requirements
● D. Renewal, Continuing Education, and Enforcement
Part II: Plumbing Code Administration and Definitions (Questions 26–45)
● A. Code Adoption and Administration
● B. Definitions and Terminology
● C. General Regulations
Part III: Water Supply and Distribution (Questions 46–70)
● A. Water Service and Sizing
● B. Water Distribution Piping
● C. Water Pressure and Flow
● D. Cross-Connection Control and Backflow Prevention
Part IV: Sanitary Drainage and Venting (Questions 71–100)
● A. Drainage System Design and Sizing
● B. Traps and Interceptors
, ● C. Venting Systems
● D. Indirect Waste and Special Waste
Part V: Fixtures and Fixture Fittings (Questions 101–120)
● A. Fixture Requirements
● B. Fixture Installation
● C. Fixture Fittings
Part VI: Water Heaters and Related Systems (Questions 121–135)
● A. Water Heater Installation
● B. Temperature and Pressure Relief
● C. Combustion Air and Venting
Part VII: Gas Piping and Fuel Gas Systems (Questions 136–145)
● A. Gas Piping Materials and Sizing
● B. Gas Appliance Connections
● C. Combustion Safety
Part VIII: Safety, Math, and Practical Application (Questions 146–150)
● A. Plumbing Math and Calculations
● B. Workplace Safety
● C. Practical Application
Part I: Licensing Laws and Regulations
1. Which Texas state agency is responsible for licensing plumbers?
A) The Texas Department of Licensing and Regulation (TDLR)
B) The Texas State Board of Plumbing Examiners (TSBPE) ✅
C) The Texas Commission on Environmental Quality (TCEQ)
,D) The Texas Department of Insurance
The Texas State Board of Plumbing Examiners (TSBPE) is the state agency
responsible for licensing plumbers in Texas, issuing licenses, endorsements,
and registrations, and enforcing the Plumbing License Law under Texas
Occupations Code Chapter 1301. TDLR regulates other trades such as HVAC
and electricians. TCEQ regulates environmental matters including water
quality, and the Texas Department of Insurance regulates insurance. None of
these agencies administer plumbing licensing.
2. Which Texas statute is known as the Plumbing License Law?
A) Texas Occupations Code Chapter 1301 ✅
B) Texas Administrative Code Title 22
C) Texas Health and Safety Code Chapter 341
D) Texas Water Code Chapter 26
The Plumbing License Law is codified at Texas Occupations Code Chapter
1301. It establishes the TSBPE, sets out licensing requirements for plumbers,
and provides the Board's enforcement authority. The Texas Administrative
Code Title 22 contains the Board's rules but is not the statute itself. The
Texas Health and Safety Code and Texas Water Code address different areas
of regulation.
3. How many types of plumbing licenses does the TSBPE issue?
A) Two
B) Three
C) Four ✅
, D) Five
The TSBPE issues four types of plumbing licenses: Tradesman
Plumber-Limited, Journeyman Plumber, Master Plumber, and Plumbing
Inspector. Two, three, and five are incorrect license counts.
4. A Tradesman Plumber-Limited license allows the holder to:
A) Perform plumbing work without supervision
B) Perform plumbing work under the supervision of a master plumber ✅
C) Supervise journeyman plumbers
D) Perform only drain cleaning work
A Tradesman Plumber-Limited licensee performs plumbing installation,
service, repair, and alteration under the supervision of a master plumber. For
structures other than one- or two-family dwellings, they must be directly
supervised by an on-site journeyman or master plumber. A tradesman may
supervise apprentices. Performing work without supervision is not permitted.
Supervising journeyman plumbers is outside the scope of a tradesman
license.
5. To qualify for a Tradesman Plumber-Limited license, an applicant must
complete at least how many hours of on-the-job training?
A) 2,000 hours
B) 3,000 hours
C) 4,000 hours ✅
D) 8,000 hours
Full-Length Practice Exam 150 Questions
with Detailed Rationales
Table of Contents
Part I: Licensing Laws and Regulations (Questions 1–25)
● A. TSBPE Authority and Jurisdiction
● B. License Types and Classifications
● C. Experience and Eligibility Requirements
● D. Renewal, Continuing Education, and Enforcement
Part II: Plumbing Code Administration and Definitions (Questions 26–45)
● A. Code Adoption and Administration
● B. Definitions and Terminology
● C. General Regulations
Part III: Water Supply and Distribution (Questions 46–70)
● A. Water Service and Sizing
● B. Water Distribution Piping
● C. Water Pressure and Flow
● D. Cross-Connection Control and Backflow Prevention
Part IV: Sanitary Drainage and Venting (Questions 71–100)
● A. Drainage System Design and Sizing
● B. Traps and Interceptors
, ● C. Venting Systems
● D. Indirect Waste and Special Waste
Part V: Fixtures and Fixture Fittings (Questions 101–120)
● A. Fixture Requirements
● B. Fixture Installation
● C. Fixture Fittings
Part VI: Water Heaters and Related Systems (Questions 121–135)
● A. Water Heater Installation
● B. Temperature and Pressure Relief
● C. Combustion Air and Venting
Part VII: Gas Piping and Fuel Gas Systems (Questions 136–145)
● A. Gas Piping Materials and Sizing
● B. Gas Appliance Connections
● C. Combustion Safety
Part VIII: Safety, Math, and Practical Application (Questions 146–150)
● A. Plumbing Math and Calculations
● B. Workplace Safety
● C. Practical Application
Part I: Licensing Laws and Regulations
1. Which Texas state agency is responsible for licensing plumbers?
A) The Texas Department of Licensing and Regulation (TDLR)
B) The Texas State Board of Plumbing Examiners (TSBPE) ✅
C) The Texas Commission on Environmental Quality (TCEQ)
,D) The Texas Department of Insurance
The Texas State Board of Plumbing Examiners (TSBPE) is the state agency
responsible for licensing plumbers in Texas, issuing licenses, endorsements,
and registrations, and enforcing the Plumbing License Law under Texas
Occupations Code Chapter 1301. TDLR regulates other trades such as HVAC
and electricians. TCEQ regulates environmental matters including water
quality, and the Texas Department of Insurance regulates insurance. None of
these agencies administer plumbing licensing.
2. Which Texas statute is known as the Plumbing License Law?
A) Texas Occupations Code Chapter 1301 ✅
B) Texas Administrative Code Title 22
C) Texas Health and Safety Code Chapter 341
D) Texas Water Code Chapter 26
The Plumbing License Law is codified at Texas Occupations Code Chapter
1301. It establishes the TSBPE, sets out licensing requirements for plumbers,
and provides the Board's enforcement authority. The Texas Administrative
Code Title 22 contains the Board's rules but is not the statute itself. The
Texas Health and Safety Code and Texas Water Code address different areas
of regulation.
3. How many types of plumbing licenses does the TSBPE issue?
A) Two
B) Three
C) Four ✅
, D) Five
The TSBPE issues four types of plumbing licenses: Tradesman
Plumber-Limited, Journeyman Plumber, Master Plumber, and Plumbing
Inspector. Two, three, and five are incorrect license counts.
4. A Tradesman Plumber-Limited license allows the holder to:
A) Perform plumbing work without supervision
B) Perform plumbing work under the supervision of a master plumber ✅
C) Supervise journeyman plumbers
D) Perform only drain cleaning work
A Tradesman Plumber-Limited licensee performs plumbing installation,
service, repair, and alteration under the supervision of a master plumber. For
structures other than one- or two-family dwellings, they must be directly
supervised by an on-site journeyman or master plumber. A tradesman may
supervise apprentices. Performing work without supervision is not permitted.
Supervising journeyman plumbers is outside the scope of a tradesman
license.
5. To qualify for a Tradesman Plumber-Limited license, an applicant must
complete at least how many hours of on-the-job training?
A) 2,000 hours
B) 3,000 hours
C) 4,000 hours ✅
D) 8,000 hours
