Texas OSSF Installer I Licensing
Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationale
2026 Q&A| Instant Download Pdf
1. Which Texas agency administers the OSSF Installer I licensing
program?
A. Texas Department of Transportation
B. Texas Department of Licensing and Regulation
C. Texas Commission on Environmental Quality
D. Texas Department of State Health Services
Answer: C. Texas Commission on Environmental Quality
Rationale: TCEQ administers the Texas OSSF occupational licensing
program.
2. Which Texas Administrative Code chapter contains the primary
OSSF construction and installation rules?
A. 30 TAC Chapter 217
B. 30 TAC Chapter 285
C. 30 TAC Chapter 290
D. 30 TAC Chapter 330
Answer: B. 30 TAC Chapter 285
Rationale: Chapter 285 contains the Texas rules governing on-site
sewage facilities.
,3. Which statute provides the primary state statutory framework
for the Texas OSSF permitting program?
A. Health and Safety Code Chapter 366
B. Water Code Chapter 26 only
C. Transportation Code Chapter 545
D. Local Government Code Chapter 43
Answer: A. Health and Safety Code Chapter 366
Rationale: Texas Health and Safety Code Chapter 366 establishes the
statutory framework for the OSSF program.
4. Which license authorizes installation of standard OSSF systems?
A. Installer I
B. Maintenance Technician
C. Site Evaluator
D. Designated Representative
Answer: A. Installer I
Rationale: Installer I is specifically authorized to install standard OSSF
systems.
5. Which license is authorized to install all types of OSSF systems?
A. Installer I
B. Installer II
C. Apprentice
D. Maintenance Technician
Answer: B. Installer II
Rationale: Installer II has broader installation authority than Installer
I.
,6. Which of the following is NOT normally an Installer I installation
category?
A. Septic tank
B. Absorptive drainfield
C. Drip irrigation
D. Unlined ET drainfield
Answer: C. Drip irrigation
Rationale: Drip irrigation is a higher-level system requiring Installer II
installation authority.
7. Before an OSSF is constructed, installed, altered, extended, or
repaired, what generally must occur first?
A. The owner must pump the existing tank
B. The site must be evaluated by an authorized professional
C. The installer must purchase insurance
D. The county must perform a soil excavation
Answer: B. The site must be evaluated by an authorized
professional
Rationale: TCEQ states that an OSSF site must be evaluated by a
licensed site evaluator or licensed professional engineer before
construction or related work.
8. Who may perform a site evaluation under the ordinary licensing
requirements?
A. Any Installer I
B. Any homeowner
, C. A licensed site evaluator or licensed professional engineer
D. Any registered apprentice
Answer: C. A licensed site evaluator or licensed professional
engineer
Rationale: Site evaluation is a separate professional function from
Installer I installation authority.
9. What course is required for a new Installer I license?
A. Installer II Advanced
B. Installer I Basic Training
C. Site Evaluator Basic Training
D. Aerobic Maintenance Provider
Answer: B. Installer I Basic Training
Rationale: TCEQ lists Installer I course 417 as the required training
course for a new Installer I license.
10. Does an applicant for an Installer I license have a minimum
educational requirement?
A. Yes, a bachelor's degree
B. Yes, an associate degree
C. Yes, a high school diploma
D. No minimum educational requirement is listed
Answer: D. No minimum educational requirement is listed
Rationale: TCEQ currently lists no minimum education and no work-
experience requirement for Installer I applicants.
Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationale
2026 Q&A| Instant Download Pdf
1. Which Texas agency administers the OSSF Installer I licensing
program?
A. Texas Department of Transportation
B. Texas Department of Licensing and Regulation
C. Texas Commission on Environmental Quality
D. Texas Department of State Health Services
Answer: C. Texas Commission on Environmental Quality
Rationale: TCEQ administers the Texas OSSF occupational licensing
program.
2. Which Texas Administrative Code chapter contains the primary
OSSF construction and installation rules?
A. 30 TAC Chapter 217
B. 30 TAC Chapter 285
C. 30 TAC Chapter 290
D. 30 TAC Chapter 330
Answer: B. 30 TAC Chapter 285
Rationale: Chapter 285 contains the Texas rules governing on-site
sewage facilities.
,3. Which statute provides the primary state statutory framework
for the Texas OSSF permitting program?
A. Health and Safety Code Chapter 366
B. Water Code Chapter 26 only
C. Transportation Code Chapter 545
D. Local Government Code Chapter 43
Answer: A. Health and Safety Code Chapter 366
Rationale: Texas Health and Safety Code Chapter 366 establishes the
statutory framework for the OSSF program.
4. Which license authorizes installation of standard OSSF systems?
A. Installer I
B. Maintenance Technician
C. Site Evaluator
D. Designated Representative
Answer: A. Installer I
Rationale: Installer I is specifically authorized to install standard OSSF
systems.
5. Which license is authorized to install all types of OSSF systems?
A. Installer I
B. Installer II
C. Apprentice
D. Maintenance Technician
Answer: B. Installer II
Rationale: Installer II has broader installation authority than Installer
I.
,6. Which of the following is NOT normally an Installer I installation
category?
A. Septic tank
B. Absorptive drainfield
C. Drip irrigation
D. Unlined ET drainfield
Answer: C. Drip irrigation
Rationale: Drip irrigation is a higher-level system requiring Installer II
installation authority.
7. Before an OSSF is constructed, installed, altered, extended, or
repaired, what generally must occur first?
A. The owner must pump the existing tank
B. The site must be evaluated by an authorized professional
C. The installer must purchase insurance
D. The county must perform a soil excavation
Answer: B. The site must be evaluated by an authorized
professional
Rationale: TCEQ states that an OSSF site must be evaluated by a
licensed site evaluator or licensed professional engineer before
construction or related work.
8. Who may perform a site evaluation under the ordinary licensing
requirements?
A. Any Installer I
B. Any homeowner
, C. A licensed site evaluator or licensed professional engineer
D. Any registered apprentice
Answer: C. A licensed site evaluator or licensed professional
engineer
Rationale: Site evaluation is a separate professional function from
Installer I installation authority.
9. What course is required for a new Installer I license?
A. Installer II Advanced
B. Installer I Basic Training
C. Site Evaluator Basic Training
D. Aerobic Maintenance Provider
Answer: B. Installer I Basic Training
Rationale: TCEQ lists Installer I course 417 as the required training
course for a new Installer I license.
10. Does an applicant for an Installer I license have a minimum
educational requirement?
A. Yes, a bachelor's degree
B. Yes, an associate degree
C. Yes, a high school diploma
D. No minimum educational requirement is listed
Answer: D. No minimum educational requirement is listed
Rationale: TCEQ currently lists no minimum education and no work-
experience requirement for Installer I applicants.
