INSTALLER EXAM PRACTICE TEST 2025–2026
(COMPLETE EXAM SET A GRADED ) WITH VERIFIED
QUESTIONS AND CORRECT ANSWERS WELL
EXPLAINED.
SECTION 1 — REGULATIONS & LICENSING
Question 1
Which agency regulates On-Site Sewage Facilities (OSSFs) in Texas?
A. EPA
B. Texas Commission on Environmental Quality
C. Texas Department of Health
D. USDA
Correct Answer: B
Explanation: The Texas Commission on Environmental Quality (TCEQ) administers statewide OSSF rules
under Chapter 285.
Question 2
An Installer I license allows installation of:
,A. Any OSSF system including aerobic units
B. Only systems requiring engineering design
C. Standard systems without secondary treatment
D. Commercial wastewater plants
Correct Answer: C
Explanation: Installer I licensees install standard systems such as conventional septic systems not
requiring advanced treatment units.
Question 3
Who issues permits for most OSSFs?
A. Federal government
B. Local Authorized Agent
C. Property owner
D. Installer
Correct Answer: B
Explanation: Authorized Agents (usually counties or health departments) administer permitting locally.
Question 4
Before construction begins, the installer must:
,A. Notify neighbors
B. Obtain a valid permit
C. Install tank first
D. Excavate entire field
Correct Answer: B
Explanation: Installation without a permit violates TCEQ rules.
Question 5
Minimum separation distances are established to protect:
A. Property value
B. Groundwater and public health
C. Construction schedules
D. Equipment safety only
Correct Answer: B
Explanation: Setbacks prevent contamination of drinking water sources.
Question 6
Who is responsible for ensuring installation follows approved plans?
A. Homeowner
B. Installer
, C. Real estate agent
D. Neighbor
Correct Answer: B
Explanation: The licensed installer is legally responsible for compliance.
Question 7
A modification to an approved design requires:
A. Verbal approval
B. Installer judgment only
C. Authorization from permitting authority
D. No action
Correct Answer: C
Question 8
Inspection typically occurs:
A. After system is buried
B. Before covering components
C. One year later
D. Only upon complaint
Correct Answer: B