TCEQ OSSF LICENSE EXAM STUDY GUIDE | COMPLETE 2025–2026 PREP |150
VERIFIED 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
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
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
List equipment and procedures to protect a work site. - CORRECT ANSWER-cones, barricades, pre
warn, sign properly, regulate speed, guide properly
OSHA requires that all excavations over ________ deep be sloped, shored, or otherwise supported
before a person enters. - CORRECT ANSWER-5 feet
VERIFIED 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
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
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
List equipment and procedures to protect a work site. - CORRECT ANSWER-cones, barricades, pre
warn, sign properly, regulate speed, guide properly
OSHA requires that all excavations over ________ deep be sloped, shored, or otherwise supported
before a person enters. - CORRECT ANSWER-5 feet
