Florida (FL) Septic Tank Contractor
Exam With Actual Questions &
Verified Answers,Plus
Rationales/Expert Verified For
Guaranteed Pass Graded A+/2026
/Latest Update/Instant Download Pdf
1. What is the minimum horizontal distance required between a septic tank
and a private potable well in Florida?
A. 25 feet
B. 75 feet
C. 50 feet
D. 100 feet
Rationale: Florida Administrative Code 64E-6 requires a minimum of 75
feet between a septic tank and a private potable well to prevent
groundwater contamination.
2. Which state agency regulates onsite sewage treatment and disposal
systems in Florida?
A. Department of Environmental Protection
B. Department of Health
C. Florida Department of Health (DOH)
D. Department of Agriculture
Rationale: The Florida Department of Health regulates OSTDS systems
under Chapter 64E-6, F.A.C.
,3. The minimum capacity of a septic tank for a three-bedroom residence in
Florida is:
A. 600 gallons
B. 700 gallons
C. 900 gallons
D. 1,000 gallons
Rationale: Florida rules specify a minimum of 900 gallons for a three-
bedroom single-family residence.
4. What is the primary function of the septic tank?
A. Aerate wastewater
B. Settle solids and provide anaerobic digestion
C. Filter all wastewater
D. Chlorinate effluent
Rationale: Septic tanks allow solids to settle and decompose
anaerobically before effluent enters the drainfield.
5. Which of the following soils would be least suitable for a conventional
drainfield?
A. Sandy loam
B. Loamy sand
C. Clay
D. Fine sand
Rationale: Clay soils have poor permeability and hinder effluent
absorption.
6. The maximum allowable depth of effluent in a drainfield trench is:
A. 24 inches
B. 30 inches
C. 18 inches
D. 36 inches
, Rationale: Florida code restricts effluent depth to a maximum of 24
inches to maintain aerobic conditions.
7. What is the minimum setback from a septic tank to a building
foundation?
A. 5 feet
B. 3 feet
C. 5 feet
D. 10 feet
Rationale: A minimum of 5 feet is required from building foundations to
septic tanks.
8. Septic tank access openings must be brought to within how many inches
of the finished ground surface?
A. 18 inches
B. 6 inches
C. 12 inches
D. 24 inches
Rationale: Code requires septic tank access ports to be within 6 inches of
ground level for inspection and maintenance.
9. What is the minimum separation required between a septic tank and
surface water?
A. 50 feet
B. 75 feet
C. 100 feet
D. 125 feet
Rationale: Florida requires a 75-foot separation from surface water to
reduce contamination risk.
10.Which of the following is a common cause of septic system failure?
A. Regular pumping
Exam With Actual Questions &
Verified Answers,Plus
Rationales/Expert Verified For
Guaranteed Pass Graded A+/2026
/Latest Update/Instant Download Pdf
1. What is the minimum horizontal distance required between a septic tank
and a private potable well in Florida?
A. 25 feet
B. 75 feet
C. 50 feet
D. 100 feet
Rationale: Florida Administrative Code 64E-6 requires a minimum of 75
feet between a septic tank and a private potable well to prevent
groundwater contamination.
2. Which state agency regulates onsite sewage treatment and disposal
systems in Florida?
A. Department of Environmental Protection
B. Department of Health
C. Florida Department of Health (DOH)
D. Department of Agriculture
Rationale: The Florida Department of Health regulates OSTDS systems
under Chapter 64E-6, F.A.C.
,3. The minimum capacity of a septic tank for a three-bedroom residence in
Florida is:
A. 600 gallons
B. 700 gallons
C. 900 gallons
D. 1,000 gallons
Rationale: Florida rules specify a minimum of 900 gallons for a three-
bedroom single-family residence.
4. What is the primary function of the septic tank?
A. Aerate wastewater
B. Settle solids and provide anaerobic digestion
C. Filter all wastewater
D. Chlorinate effluent
Rationale: Septic tanks allow solids to settle and decompose
anaerobically before effluent enters the drainfield.
5. Which of the following soils would be least suitable for a conventional
drainfield?
A. Sandy loam
B. Loamy sand
C. Clay
D. Fine sand
Rationale: Clay soils have poor permeability and hinder effluent
absorption.
6. The maximum allowable depth of effluent in a drainfield trench is:
A. 24 inches
B. 30 inches
C. 18 inches
D. 36 inches
, Rationale: Florida code restricts effluent depth to a maximum of 24
inches to maintain aerobic conditions.
7. What is the minimum setback from a septic tank to a building
foundation?
A. 5 feet
B. 3 feet
C. 5 feet
D. 10 feet
Rationale: A minimum of 5 feet is required from building foundations to
septic tanks.
8. Septic tank access openings must be brought to within how many inches
of the finished ground surface?
A. 18 inches
B. 6 inches
C. 12 inches
D. 24 inches
Rationale: Code requires septic tank access ports to be within 6 inches of
ground level for inspection and maintenance.
9. What is the minimum separation required between a septic tank and
surface water?
A. 50 feet
B. 75 feet
C. 100 feet
D. 125 feet
Rationale: Florida requires a 75-foot separation from surface water to
reduce contamination risk.
10.Which of the following is a common cause of septic system failure?
A. Regular pumping
