TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150 QUESTIONS, MATH FORMULAS, & SITE
EVALUATION ANSWERS
TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150
QUESTIONS, MATH FORMULAS, & SITE EVALUATION
ANSWERS
Designed to help candidates pass the TCEQ On-Site Sewage Facility (OSSF) exams with
confidence, this comprehensive resource covers:
• Licensing requirements and restrictions
• Soil evaluations and permitting steps
• Wastewater treatment and public health safety
• Septic system components, installation standards, and maintenance
• OSHA excavation rules and site safety practices
• In-depth math problems (volume, slope, area, conversions) for tank sizing, drainfield
coverage, and materials estimation
• Microbiology and environmental hazards of wastewater systems
This all-in-one guide is ideal for those pursuing certification or needing a trusted reference for
OSSF fieldwork.
adopted the current OSSF Rules in 1997 and revised them several times - CORRECT
ANSWER-TCEQ
,TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150 QUESTIONS, MATH FORMULAS, & SITE
EVALUATION ANSWERS
The is responsible for reviewing permit applications, site evaluations, planning materials,
and conducting inspection of OSSFs - CORRECT ANSWER-Designated representative
An individual who holds a valid license from the TCEQ and who is compensated by another
individual to construct, install, alter, or repair an OSSF is a(n) . - CORRECT ANSWER-
Installer
An individual who visits a site and conducts soil evaluations and a site survey is a(n) .-
CORRECT ANSWER-Site evaluator
List the OSSF licenses that require previous experience. - CORRECT ANSWER-Installer II,
Maintenance Provider
Individuals working as a(n) or in any capacity for an OSSF cannot work as an Installer,
Designer for a fee, or private Site Evaluator within the jurisdiction of the permitting authority -
CORRECT ANSWER-Designated Representative, Authorized agent
What is needed to prequalify for an exam? - CORRECT ANSWER-submit an application, paying
class and application fees, and completing the appropriate training course
New OSSF licenses are issued for a term of - CORRECT ANSWER-3 years
, TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150 QUESTIONS, MATH FORMULAS, & SITE
EVALUATION ANSWERS
An individual must complete of the TCEQ-approved continuing education courses in order to
renew the license. - CORRECT ANSWER-24 hours
List the nine steps of the permitting process. - CORRECT ANSWER-1. Have site and soil
evaluation conducted by Site Evaluator
2. Select OSSF
3. System planned by qualified individual
4. Prepare and submit permit application
5. Application and planning materials reviewed by permitting authority
6. Receive permit to construct
7. Construction
8. System inspected at appropriate stages
9. Notice of approval and permit to operate issued by permitting agency
Penalties for violating the laws, rules, or regulations covering OSSF can be imposed under what
headings? - CORRECT ANSWER-criminal penalties, injunction or civil suit, administrative
penalties
Planning materials for an OSSF utilizing secondary treatment must be prepared by a/an .
- CORRECT ANSWER-PE or RS
Who can legally install a septic tank followed by a low-pressure dosing drain field at a rental
house? -
CORRECT ANSWER-installer II
EVALUATION ANSWERS
TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150
QUESTIONS, MATH FORMULAS, & SITE EVALUATION
ANSWERS
Designed to help candidates pass the TCEQ On-Site Sewage Facility (OSSF) exams with
confidence, this comprehensive resource covers:
• Licensing requirements and restrictions
• Soil evaluations and permitting steps
• Wastewater treatment and public health safety
• Septic system components, installation standards, and maintenance
• OSHA excavation rules and site safety practices
• In-depth math problems (volume, slope, area, conversions) for tank sizing, drainfield
coverage, and materials estimation
• Microbiology and environmental hazards of wastewater systems
This all-in-one guide is ideal for those pursuing certification or needing a trusted reference for
OSSF fieldwork.
adopted the current OSSF Rules in 1997 and revised them several times - CORRECT
ANSWER-TCEQ
,TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150 QUESTIONS, MATH FORMULAS, & SITE
EVALUATION ANSWERS
The is responsible for reviewing permit applications, site evaluations, planning materials,
and conducting inspection of OSSFs - CORRECT ANSWER-Designated representative
An individual who holds a valid license from the TCEQ and who is compensated by another
individual to construct, install, alter, or repair an OSSF is a(n) . - CORRECT ANSWER-
Installer
An individual who visits a site and conducts soil evaluations and a site survey is a(n) .-
CORRECT ANSWER-Site evaluator
List the OSSF licenses that require previous experience. - CORRECT ANSWER-Installer II,
Maintenance Provider
Individuals working as a(n) or in any capacity for an OSSF cannot work as an Installer,
Designer for a fee, or private Site Evaluator within the jurisdiction of the permitting authority -
CORRECT ANSWER-Designated Representative, Authorized agent
What is needed to prequalify for an exam? - CORRECT ANSWER-submit an application, paying
class and application fees, and completing the appropriate training course
New OSSF licenses are issued for a term of - CORRECT ANSWER-3 years
, TCEQ OSSF LICENSE EXAM STUDY GUIDE 2025–2026 150 QUESTIONS, MATH FORMULAS, & SITE
EVALUATION ANSWERS
An individual must complete of the TCEQ-approved continuing education courses in order to
renew the license. - CORRECT ANSWER-24 hours
List the nine steps of the permitting process. - CORRECT ANSWER-1. Have site and soil
evaluation conducted by Site Evaluator
2. Select OSSF
3. System planned by qualified individual
4. Prepare and submit permit application
5. Application and planning materials reviewed by permitting authority
6. Receive permit to construct
7. Construction
8. System inspected at appropriate stages
9. Notice of approval and permit to operate issued by permitting agency
Penalties for violating the laws, rules, or regulations covering OSSF can be imposed under what
headings? - CORRECT ANSWER-criminal penalties, injunction or civil suit, administrative
penalties
Planning materials for an OSSF utilizing secondary treatment must be prepared by a/an .
- CORRECT ANSWER-PE or RS
Who can legally install a septic tank followed by a low-pressure dosing drain field at a rental
house? -
CORRECT ANSWER-installer II
