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Examen

Texas OSSF Installer I & II Licensing Exam 2026 — 100 Actual Exam Q&A with Verified Answers & TCEQ Rationales

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Pass the TCEQ Texas OSSF Installer I & II Licensing Exam with this brand-new 2026 actual exam study guide. Features 100 verified Q&A with detailed rationales covering TAC Chapter 285, percolation testing, septic tank installation, drain field design, aerobic treatment units, soil evaluation, effluent distribution, TCEQ regulations, and system maintenance. Guaranteed pass prep for Installer I, Installer II, and Maintenance Provider CBT exams. Instant PDF download.

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TEXAS SEPTIC INSTALLER LICENSING EXAM NEWEST 2
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026 ACTUAL EXAM QUESTIONS AND CORRECT DETAIL
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ED ANSWERS (VERIFIED ANSWERS) ALL ANSWERED {
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100 Q & A} ALREADY GRADED A+ | BRAND NEW! | 100%
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GUARANTEED PASS h




1. An OSSF permit may be denied if:
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a) The soil does not meet minimum percolation or
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depth requirements h



b) The tank is less than 2 years old
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c) The house is not occupied
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d) The owner does not want chlorine
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Rationale: Soil conditions that do not support treatment are valid
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reasons to deny a permit. h h h h




2. A system permit becomes void if installation is not
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completed within how many months? h h h h



a) 6
b) 9
c) 12
d) 18
Rationale: Texas permits expire if the system is not i
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nstalled within 12 months of issuance.
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3. Which of the following requires immediate reporting to
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TCEQ?
a) Increased water bill h h



b) Landscaping near the tank h h h



c) System discharge onto ground surface
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d) Septic odor near vent h h h



Rationale: Surface discharge is a public health violation and mus
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t be reported.
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4. When is a professional maintenance contract required by l
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aw?
a) All systems h



b) Only for systems near water
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c) For all aerobic treatment systems
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d) If the owner requests
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Rationale: Aerobic systems require routine inspection and maint
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enance under a contract. h h h




5. Gravel-less pipe systems use: h h h



a) Corrugated pipe with geotextile material h h h h



b) Concrete tiles h



c) Poured gravel h



d) Clay pipes h



Rationale: Gravel- h



less systems are a modern alternative using pipe wrapped in
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geotextile for absorption. h h




6. A maintenance contract is required for which type of
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OSSF system? h



a) Standard septic tank h h



b) Aerobic treatment unit h h



c) Gravel-less trench h

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d) Conventional system with effluent filter h h h h



Rationale: ATUs must be maintained under contract by a license
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d provider to ensure performance.
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7. What should be done before backfilling a septic
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tank installation?
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a) Add water to tank h h h



b) Inspection by the permitting authority h h h h



c) Start using the system h h h



d) Install distribution box h h



Rationale: The permitting authority must inspect the system
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before it’s covered to verify compliance.
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8. The minimum separation distance between a septic tank
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and a public water supply well is:
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a) 50 feet h



b) 100 feet h



c) 150 feet h



d) 200 feet h



Rationale: Texas requires at least 150 feet of separation between
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septic tanks and public water wells.
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9. What happens if a septic tank is installed out of level?
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a) It may lead to solids clogging the outlet
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b) Water will evaporate faster h h h



c) The tank will self-adjust
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d) Chlorine won’t work h h



Rationale: An uneven tank may not settle solids properly, leadin
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g to outlet clogging and failure.
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10. The typical lifespan of a properly maintained
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conventional OSSF system is: h h h



a) 5–10 years h

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b) 10–15 years h



c) 20–30 years h



d) 40–50 years h



Rationale: A properly maintained system can last 20 to 30 years
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or more.
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11. A permit is not required for which of the following in
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Texas?
a) Installing a new septic system h h h h



b) Modifying an existing system h h h



c) Replacing a broken sprinkler head in an existing spray s h h h h h h h h h


ystem
d) Expanding an absorption field h h h



Rationale: Minor repairs like replacing sprinkler heads
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don’t require new permits.
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12. A visual sign of high water usage in the home may be:
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a) Yellow grass h



b) Continual wetness near the drain field h h h h h



c) Rotten egg smell inside h h h



d) Cloudy tap water h h



Rationale: Overuse of water may cause saturation of the drai
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n field, leading to surfacing water.
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13. A two-compartment septic tank is designed to:
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a) Mix incoming wastewater
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b) Settle solids in stages for improved separation
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c) Accelerate sludge buildup h h



d) Reduce odor h



Rationale: Two compartments improve settling by allowing solid
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s to separate in two stages.
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14. Before installation begins, what must be verified on-site?
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a) Property ownership h

Información del documento

Subido en
11 de julio de 2026
Número de páginas
35
Escrito en
2025/2026
Tipo
Examen
Contiene
Preguntas y respuestas
$13.99

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