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Florida Septic Tank Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Florida Septic Tank Contractor Exam – MCQs Batch 1 (100 Questions)
Exam Coverage Summary (Short)
• Florida laws, licensing, and regulations (DOH, 64E-6 F.A.C.)
• Site evaluation, soil testing, and suitability assessment
• Septic system types, components, and design requirements
• Installation procedures, pipe layout, and backfilling
• Operation, maintenance, and troubleshooting of septic systems
• Environmental protection, safety, and waste handling
• Technical calculations: flow rates, tank sizing, and slope measurements
Questions and Rationales
1. Which Florida department regulates onsite sewage treatment systems and issues
permits for septic tank installations?
o A) Department of Environmental Protection
o B) Department of Health
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o C) Department of Agriculture
o D) Florida Building Commission
Answer: B
Rationale: The Florida Department of Health (DOH) regulates all onsite sewage
treatment and disposal systems (OSTDS).
2. What is the minimum setback distance required between a septic tank drainfield and a
potable water well in Florida?
o A) 50 feet
o B) 75 feet
o C) 100 feet
o D) 25 feet
Answer: B
Rationale: Florida regulations require at least 75 feet between a drainfield and a
potable water well to prevent contamination.
3. Which soil type is generally considered most suitable for conventional septic drainfield
absorption?
o A) Clay with poor percolation
o B) Sandy loam with moderate percolation
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o C) Rocky soil
o D) Compact clay
Answer: B
Rationale: Sandy loam allows proper percolation and absorption while
preventing backup and system failure.
4. What is the primary purpose of a distribution box in a septic system?
o A) Treat wastewater biologically
o B) Evenly distribute effluent to drainfield trenches
o C) Pump sewage to a municipal line
o D) Store sludge for removal
Answer: B
Rationale: A distribution box ensures effluent is evenly distributed across all
drainfield trenches for proper soil absorption.
5. According to Florida regulations, what is the minimum liquid capacity required for a two-
bedroom residential septic tank?
o A) 500 gallons
o B) 750 gallons
o C) 1000 gallons
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o D) 1250 gallons
Answer: B
Rationale: The minimum required tank size for a two-bedroom home is 750
gallons to accommodate daily sewage flow.
6. Which alternative system is often used when soil percolation rates are too low for
conventional drainfields?
o A) Gravity-fed conventional system
o B) Mound system
o C) Aerobic treatment unit
o D) Sand filter system
Answer: B
Rationale: Mound systems are raised drainfields used when soil cannot properly
absorb effluent, common in Florida.
7. What is the most common cause of septic system failure related to homeowner
maintenance?
o A) Excessive water use
o B) Flushing inappropriate materials
o C) Neglecting pumping schedules
Florida Septic Tank Contractor EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
Florida Septic Tank Contractor Exam – MCQs Batch 1 (100 Questions)
Exam Coverage Summary (Short)
• Florida laws, licensing, and regulations (DOH, 64E-6 F.A.C.)
• Site evaluation, soil testing, and suitability assessment
• Septic system types, components, and design requirements
• Installation procedures, pipe layout, and backfilling
• Operation, maintenance, and troubleshooting of septic systems
• Environmental protection, safety, and waste handling
• Technical calculations: flow rates, tank sizing, and slope measurements
Questions and Rationales
1. Which Florida department regulates onsite sewage treatment systems and issues
permits for septic tank installations?
o A) Department of Environmental Protection
o B) Department of Health
, Page 2 of 111
o C) Department of Agriculture
o D) Florida Building Commission
Answer: B
Rationale: The Florida Department of Health (DOH) regulates all onsite sewage
treatment and disposal systems (OSTDS).
2. What is the minimum setback distance required between a septic tank drainfield and a
potable water well in Florida?
o A) 50 feet
o B) 75 feet
o C) 100 feet
o D) 25 feet
Answer: B
Rationale: Florida regulations require at least 75 feet between a drainfield and a
potable water well to prevent contamination.
3. Which soil type is generally considered most suitable for conventional septic drainfield
absorption?
o A) Clay with poor percolation
o B) Sandy loam with moderate percolation
, Page 3 of 111
o C) Rocky soil
o D) Compact clay
Answer: B
Rationale: Sandy loam allows proper percolation and absorption while
preventing backup and system failure.
4. What is the primary purpose of a distribution box in a septic system?
o A) Treat wastewater biologically
o B) Evenly distribute effluent to drainfield trenches
o C) Pump sewage to a municipal line
o D) Store sludge for removal
Answer: B
Rationale: A distribution box ensures effluent is evenly distributed across all
drainfield trenches for proper soil absorption.
5. According to Florida regulations, what is the minimum liquid capacity required for a two-
bedroom residential septic tank?
o A) 500 gallons
o B) 750 gallons
o C) 1000 gallons
, Page 4 of 111
o D) 1250 gallons
Answer: B
Rationale: The minimum required tank size for a two-bedroom home is 750
gallons to accommodate daily sewage flow.
6. Which alternative system is often used when soil percolation rates are too low for
conventional drainfields?
o A) Gravity-fed conventional system
o B) Mound system
o C) Aerobic treatment unit
o D) Sand filter system
Answer: B
Rationale: Mound systems are raised drainfields used when soil cannot properly
absorb effluent, common in Florida.
7. What is the most common cause of septic system failure related to homeowner
maintenance?
o A) Excessive water use
o B) Flushing inappropriate materials
o C) Neglecting pumping schedules
