Texas On-Site Sewage Facility (OSSF)
Maintenance Provider Exam Prep 2026/2027
– Actual Questions with Verified Answers,
Detailed Rationales & Expert-Reviewed
Study Guide PDF (Latest Updated Edition)
TEXAS ON-SITE SEWAGE FACILITY (OSSF) MAINTENANCE PROVIDER EXAM PREP
2026/2027 Actual Questions with Verified Answers, Detailed EXPERT
RATIONALE & Expert-Reviewed Study Guide Latest Updated Edition —
Questions
• This guide features actual-style exam questions covering all tested OSSF domains
— regulations, system types, site evaluation, maintenance, safety, troubleshooting,
and recordkeeping — each with five answer options, a verified correct answer, and
a detailed EXPERT RATIONALE.
• To maximize retention, attempt each question independently before reviewing
the highlighted correct answer and EXPERT RATIONALE; revisit any topic where
you select an incorrect option, as exam questions are drawn from every domain
covered here.
1. What state agency is primarily responsible for regulating On-Site Sewage
Facilities (OSSFs) in Texas?
A) Texas Department of State Health Services (DSHS)
B) Texas Water Development Board (TWDB)
C) Texas Commission on Environmental Quality (TCEQ)
D) Texas Department of Agriculture (TDA)
E) U.S. Environmental Protection Agency (EPA)
Correct Answer: C) Texas Commission on Environmental Quality (TCEQ)
EXPERT RATIONALE: TCEQ is the primary state agency responsible for regulating
OSSFs in Texas under 30 TAC Chapter 285. TCEQ sets standards, issues licenses for
,installers and maintenance providers, and oversees authorized agents who enforce
rules at the local level.
2. Under which Texas Administrative Code chapter are On-Site Sewage
Facilities regulated?
A) 30 TAC Chapter 210
B) 30 TAC Chapter 290
C) 30 TAC Chapter 285
D) 30 TAC Chapter 300
E) 30 TAC Chapter 115
Correct Answer: C) 30 TAC Chapter 285
EXPERT RATIONALE: 30 TAC Chapter 285 is the specific regulation governing the
design, installation, and maintenance of OSSFs in Texas. Maintenance providers
must be thoroughly familiar with its requirements to remain in compliance and
properly service OSSF systems.
3. What is an "authorized agent" in the context of Texas OSSF regulation?
A) A licensed plumber authorized to install septic systems
B) A TCEQ employee who conducts field inspections
C) A local governmental entity, such as a county or municipality, that has adopted
and enforces OSSF rules
D) A private company authorized by TCEQ to issue permits
E) A certified soil scientist approved to conduct site evaluations
Correct Answer: C) A local governmental entity, such as a county or
municipality, that has adopted and enforces OSSF rules
,EXPERT RATIONALE: An authorized agent is a county, municipality, or other local
government that has entered into an agreement with TCEQ to enforce OSSF
regulations within its jurisdiction. Authorized agents issue permits, conduct
inspections, and enforce compliance at the local level.
4. Which of the following entities can legally serve as an authorized agent in
Texas?
A) Private engineering firms
B) Licensed maintenance providers
C) Counties or municipalities that have formally adopted OSSF rules
D) Real estate agencies
E) Homeowners associations
Correct Answer: C) Counties or municipalities that have formally adopted
OSSF rules
EXPERT RATIONALE: Only governmental entities such as counties, cities, or other
political subdivisions can serve as authorized agents by entering into a formal
agreement with TCEQ. Private companies and individuals cannot be authorized
agents regardless of their qualifications.
5. What is required for a person to legally perform OSSF maintenance in
Texas?
A) A plumber's license from the Texas State Board of Plumbing Examiners
B) A valid OSSF Maintenance Provider license issued by TCEQ
C) A certificate from the National Onsite Wastewater Recycling Association (NOWRA)
D) A general contractor's license
E) No license is required; any person can perform OSSF maintenance
, Correct Answer: B) A valid OSSF Maintenance Provider license issued by
TCEQ
EXPERT RATIONALE: Texas requires that all persons performing OSSF maintenance
under a maintenance contract hold a valid Maintenance Provider license issued by
TCEQ. This ensures only qualified individuals service these systems, protecting
public health and the environment.
6. How often must a Texas OSSF Maintenance Provider renew their license?
A) Every 6 months
B) Every year
C) Every 2 years
D) Every 3 years
E) Every 5 years
Correct Answer: C) Every 2 years
EXPERT RATIONALE: OSSF Maintenance Provider licenses in Texas must be
renewed every two years. Renewal typically requires proof of continuing education
hours approved by TCEQ to ensure providers remain current with regulations and
technology.
7. How many continuing education (CE) hours are required for OSSF
Maintenance Provider license renewal in Texas?
A) 4 hours
B) 6 hours
C) 8 hours
D) 12 hours
E) 16 hours
Maintenance Provider Exam Prep 2026/2027
– Actual Questions with Verified Answers,
Detailed Rationales & Expert-Reviewed
Study Guide PDF (Latest Updated Edition)
TEXAS ON-SITE SEWAGE FACILITY (OSSF) MAINTENANCE PROVIDER EXAM PREP
2026/2027 Actual Questions with Verified Answers, Detailed EXPERT
RATIONALE & Expert-Reviewed Study Guide Latest Updated Edition —
Questions
• This guide features actual-style exam questions covering all tested OSSF domains
— regulations, system types, site evaluation, maintenance, safety, troubleshooting,
and recordkeeping — each with five answer options, a verified correct answer, and
a detailed EXPERT RATIONALE.
• To maximize retention, attempt each question independently before reviewing
the highlighted correct answer and EXPERT RATIONALE; revisit any topic where
you select an incorrect option, as exam questions are drawn from every domain
covered here.
1. What state agency is primarily responsible for regulating On-Site Sewage
Facilities (OSSFs) in Texas?
A) Texas Department of State Health Services (DSHS)
B) Texas Water Development Board (TWDB)
C) Texas Commission on Environmental Quality (TCEQ)
D) Texas Department of Agriculture (TDA)
E) U.S. Environmental Protection Agency (EPA)
Correct Answer: C) Texas Commission on Environmental Quality (TCEQ)
EXPERT RATIONALE: TCEQ is the primary state agency responsible for regulating
OSSFs in Texas under 30 TAC Chapter 285. TCEQ sets standards, issues licenses for
,installers and maintenance providers, and oversees authorized agents who enforce
rules at the local level.
2. Under which Texas Administrative Code chapter are On-Site Sewage
Facilities regulated?
A) 30 TAC Chapter 210
B) 30 TAC Chapter 290
C) 30 TAC Chapter 285
D) 30 TAC Chapter 300
E) 30 TAC Chapter 115
Correct Answer: C) 30 TAC Chapter 285
EXPERT RATIONALE: 30 TAC Chapter 285 is the specific regulation governing the
design, installation, and maintenance of OSSFs in Texas. Maintenance providers
must be thoroughly familiar with its requirements to remain in compliance and
properly service OSSF systems.
3. What is an "authorized agent" in the context of Texas OSSF regulation?
A) A licensed plumber authorized to install septic systems
B) A TCEQ employee who conducts field inspections
C) A local governmental entity, such as a county or municipality, that has adopted
and enforces OSSF rules
D) A private company authorized by TCEQ to issue permits
E) A certified soil scientist approved to conduct site evaluations
Correct Answer: C) A local governmental entity, such as a county or
municipality, that has adopted and enforces OSSF rules
,EXPERT RATIONALE: An authorized agent is a county, municipality, or other local
government that has entered into an agreement with TCEQ to enforce OSSF
regulations within its jurisdiction. Authorized agents issue permits, conduct
inspections, and enforce compliance at the local level.
4. Which of the following entities can legally serve as an authorized agent in
Texas?
A) Private engineering firms
B) Licensed maintenance providers
C) Counties or municipalities that have formally adopted OSSF rules
D) Real estate agencies
E) Homeowners associations
Correct Answer: C) Counties or municipalities that have formally adopted
OSSF rules
EXPERT RATIONALE: Only governmental entities such as counties, cities, or other
political subdivisions can serve as authorized agents by entering into a formal
agreement with TCEQ. Private companies and individuals cannot be authorized
agents regardless of their qualifications.
5. What is required for a person to legally perform OSSF maintenance in
Texas?
A) A plumber's license from the Texas State Board of Plumbing Examiners
B) A valid OSSF Maintenance Provider license issued by TCEQ
C) A certificate from the National Onsite Wastewater Recycling Association (NOWRA)
D) A general contractor's license
E) No license is required; any person can perform OSSF maintenance
, Correct Answer: B) A valid OSSF Maintenance Provider license issued by
TCEQ
EXPERT RATIONALE: Texas requires that all persons performing OSSF maintenance
under a maintenance contract hold a valid Maintenance Provider license issued by
TCEQ. This ensures only qualified individuals service these systems, protecting
public health and the environment.
6. How often must a Texas OSSF Maintenance Provider renew their license?
A) Every 6 months
B) Every year
C) Every 2 years
D) Every 3 years
E) Every 5 years
Correct Answer: C) Every 2 years
EXPERT RATIONALE: OSSF Maintenance Provider licenses in Texas must be
renewed every two years. Renewal typically requires proof of continuing education
hours approved by TCEQ to ensure providers remain current with regulations and
technology.
7. How many continuing education (CE) hours are required for OSSF
Maintenance Provider license renewal in Texas?
A) 4 hours
B) 6 hours
C) 8 hours
D) 12 hours
E) 16 hours
