OSSF Installer I Certification Exam
Study Guide | TCEQ Texas On-Site
Sewage Facility Practice Questions
And Correct Answers (Verified
Answers) Plus Rationale 2026 Q&A|
Instant Download Pdf
1. What does OSSF stand for?
A. On-Site Sanitation Facility
B. On-Site Sewage Facility
C. Off-Site Sewage Facility
D. On-Site Sewer Flow
Answer: B. On-Site Sewage Facility
Rationale: OSSF is the standard Texas regulatory abbreviation for an
On-Site Sewage Facility.
2. Which Texas agency administers the statewide OSSF licensing
program?
A. Texas Department of Transportation
B. Texas Department of Insurance
C. Texas Commission on Environmental Quality
D. Texas Department of Agriculture
Answer: C. Texas Commission on Environmental Quality
Rationale: TCEQ administers the Texas OSSF licensing and regulatory
program.
,3. Which Texas Administrative Code chapter contains the primary
OSSF construction and installation rules?
A. Chapter 210
B. Chapter 217
C. Chapter 285
D. Chapter 290
Answer: C. Chapter 285
Rationale: 30 TAC Chapter 285 contains Texas rules governing On-
Site Sewage Facilities.
4. Which chapter contains Texas OSSF occupational licensing
requirements?
A. 30 TAC Chapter 30, Subchapter G
B. 30 TAC Chapter 210
C. 30 TAC Chapter 290
D. 30 TAC Chapter 344
Answer: A. 30 TAC Chapter 30, Subchapter G
Rationale: OSSF occupational licenses and registrations are
addressed in Chapter 30, Subchapter G.
5. Which Texas statute establishes the state's 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 provides the
statutory foundation for the OSSF program.
6. What is the primary purpose of an OSSF?
A. Store drinking water
B. Treat and dispose of wastewater generated at a property
C. Supply irrigation water
D. Collect stormwater
Answer: B. Treat and dispose of wastewater generated at a
property
Rationale: An OSSF provides wastewater treatment and disposal
when connection to a centralized sewer system is not used.
7. Which license authorizes installation of standard OSSF systems?
A. Installer I
B. Site Evaluator only
C. Maintenance Provider only
D. Designated Representative only
Answer: A. Installer I
Rationale: TCEQ specifically authorizes Installer I licensees to
construct specified standard OSSF systems.
8. Which license generally authorizes construction of all types of
OSSF systems?
A. Installer I
B. Installer II
C. Apprentice
D. Maintenance Technician
, Answer: B. Installer II
Rationale: TCEQ identifies Installer II as the license authorized to
construct all OSSF system types.
9. Does an Installer I license authorize construction of every type of
OSSF?
A. Yes
B. No
C. Only on residential properties
D. Only with homeowner permission
Answer: B. No
Rationale: Installer I authorization is limited to the systems identified
for Installer I; more complex systems generally require Installer II.
10. Which of the following is within the standard Installer I scope?
A. Drip irrigation
B. Surface application
C. Absorptive drainfield
D. Mound system
Answer: C. Absorptive drainfield
Rationale: Absorptive drainfields are among the standard systems
that an Installer I may install.
11. Which system is generally outside the Installer I installation
scope?
A. Septic tank
B. Gravel-less pipe
Study Guide | TCEQ Texas On-Site
Sewage Facility Practice Questions
And Correct Answers (Verified
Answers) Plus Rationale 2026 Q&A|
Instant Download Pdf
1. What does OSSF stand for?
A. On-Site Sanitation Facility
B. On-Site Sewage Facility
C. Off-Site Sewage Facility
D. On-Site Sewer Flow
Answer: B. On-Site Sewage Facility
Rationale: OSSF is the standard Texas regulatory abbreviation for an
On-Site Sewage Facility.
2. Which Texas agency administers the statewide OSSF licensing
program?
A. Texas Department of Transportation
B. Texas Department of Insurance
C. Texas Commission on Environmental Quality
D. Texas Department of Agriculture
Answer: C. Texas Commission on Environmental Quality
Rationale: TCEQ administers the Texas OSSF licensing and regulatory
program.
,3. Which Texas Administrative Code chapter contains the primary
OSSF construction and installation rules?
A. Chapter 210
B. Chapter 217
C. Chapter 285
D. Chapter 290
Answer: C. Chapter 285
Rationale: 30 TAC Chapter 285 contains Texas rules governing On-
Site Sewage Facilities.
4. Which chapter contains Texas OSSF occupational licensing
requirements?
A. 30 TAC Chapter 30, Subchapter G
B. 30 TAC Chapter 210
C. 30 TAC Chapter 290
D. 30 TAC Chapter 344
Answer: A. 30 TAC Chapter 30, Subchapter G
Rationale: OSSF occupational licenses and registrations are
addressed in Chapter 30, Subchapter G.
5. Which Texas statute establishes the state's 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 provides the
statutory foundation for the OSSF program.
6. What is the primary purpose of an OSSF?
A. Store drinking water
B. Treat and dispose of wastewater generated at a property
C. Supply irrigation water
D. Collect stormwater
Answer: B. Treat and dispose of wastewater generated at a
property
Rationale: An OSSF provides wastewater treatment and disposal
when connection to a centralized sewer system is not used.
7. Which license authorizes installation of standard OSSF systems?
A. Installer I
B. Site Evaluator only
C. Maintenance Provider only
D. Designated Representative only
Answer: A. Installer I
Rationale: TCEQ specifically authorizes Installer I licensees to
construct specified standard OSSF systems.
8. Which license generally authorizes construction of all types of
OSSF systems?
A. Installer I
B. Installer II
C. Apprentice
D. Maintenance Technician
, Answer: B. Installer II
Rationale: TCEQ identifies Installer II as the license authorized to
construct all OSSF system types.
9. Does an Installer I license authorize construction of every type of
OSSF?
A. Yes
B. No
C. Only on residential properties
D. Only with homeowner permission
Answer: B. No
Rationale: Installer I authorization is limited to the systems identified
for Installer I; more complex systems generally require Installer II.
10. Which of the following is within the standard Installer I scope?
A. Drip irrigation
B. Surface application
C. Absorptive drainfield
D. Mound system
Answer: C. Absorptive drainfield
Rationale: Absorptive drainfields are among the standard systems
that an Installer I may install.
11. Which system is generally outside the Installer I installation
scope?
A. Septic tank
B. Gravel-less pipe
