Florida Septic Tank Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which Florida statute primarily governs the construction and
maintenance of onsite sewage treatment and disposal systems?
A. Florida Building Code
B. Florida Water Pollution Control Act
C. Florida Statutes Chapter 489
D. Florida Administrative Code Chapter 64E-6
Rationale: Florida Statutes Chapter 489 specifically regulates the
licensing and professional conduct of contractors, including septic tank
contractors. While the Florida Building Code and Administrative Code
include rules, the primary statutory authority is Chapter 489.
2. Before beginning work on a septic system in Florida, a contractor
must obtain:
, A. Local zoning approval only
B. A permit from the county health department
C. A plumbing inspection certificate
D. Approval from the Florida Department of Environmental
Protection
Rationale: County health departments oversee permitting for septic
systems. Without a proper permit, work is illegal.
3. The minimum distance required between a septic tank and a
potable water well in Florida is:
A. 25 feet
B. 50 feet
C. 75 feet
D. 100 feet
Rationale: Florida law requires septic tanks to be at least 100 feet from
potable wells to prevent contamination of drinking water.
4. Which type of soil is most suitable for septic drainfields?
A. Clay
B. Sandy soil with good permeability
C. Rocky soil
D. Silty soil
,Rationale: Sandy soil allows proper percolation and treatment of
effluent. Clay and silty soils impede flow and can cause system failure.
5. What is the standard capacity of a typical residential septic tank in
Florida?
A. 500 gallons
B. 750 gallons
C. 1,000 gallons
D. 1,500 gallons
Rationale: Florida code generally requires a minimum 1,000-gallon
septic tank for typical single-family homes to accommodate daily
wastewater flows.
6. Which of the following is a common cause of septic system
failure?
A. Proper maintenance
B. Excessive water usage
C. Adequate soil percolation
D. Correct tank size
Rationale: Excessive water overloads the system, reducing treatment
efficiency and potentially causing surface backup.
7. How often should a residential septic tank be pumped under
normal usage?
, A. Every 6 months
B. Every 3–5 years
C. Every 10 years
D. Only when a backup occurs
Rationale: Pumping every 3–5 years prevents solids from overfilling and
clogging the drainfield.
8. The effluent from a septic tank flows into:
A. The municipal sewer
B. A surface water body
C. A drainfield or absorption field
D. An industrial treatment plant
Rationale: Septic systems are designed for on-site treatment; effluent
goes into a drainfield for soil filtration.
9. Which component separates solids from liquids in a septic tank?
A. Effluent filter
B. Baffles
C. Drainfield
D. Distribution box
Rationale: Baffles slow the flow of wastewater and prevent solids from
leaving the tank.
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which Florida statute primarily governs the construction and
maintenance of onsite sewage treatment and disposal systems?
A. Florida Building Code
B. Florida Water Pollution Control Act
C. Florida Statutes Chapter 489
D. Florida Administrative Code Chapter 64E-6
Rationale: Florida Statutes Chapter 489 specifically regulates the
licensing and professional conduct of contractors, including septic tank
contractors. While the Florida Building Code and Administrative Code
include rules, the primary statutory authority is Chapter 489.
2. Before beginning work on a septic system in Florida, a contractor
must obtain:
, A. Local zoning approval only
B. A permit from the county health department
C. A plumbing inspection certificate
D. Approval from the Florida Department of Environmental
Protection
Rationale: County health departments oversee permitting for septic
systems. Without a proper permit, work is illegal.
3. The minimum distance required between a septic tank and a
potable water well in Florida is:
A. 25 feet
B. 50 feet
C. 75 feet
D. 100 feet
Rationale: Florida law requires septic tanks to be at least 100 feet from
potable wells to prevent contamination of drinking water.
4. Which type of soil is most suitable for septic drainfields?
A. Clay
B. Sandy soil with good permeability
C. Rocky soil
D. Silty soil
,Rationale: Sandy soil allows proper percolation and treatment of
effluent. Clay and silty soils impede flow and can cause system failure.
5. What is the standard capacity of a typical residential septic tank in
Florida?
A. 500 gallons
B. 750 gallons
C. 1,000 gallons
D. 1,500 gallons
Rationale: Florida code generally requires a minimum 1,000-gallon
septic tank for typical single-family homes to accommodate daily
wastewater flows.
6. Which of the following is a common cause of septic system
failure?
A. Proper maintenance
B. Excessive water usage
C. Adequate soil percolation
D. Correct tank size
Rationale: Excessive water overloads the system, reducing treatment
efficiency and potentially causing surface backup.
7. How often should a residential septic tank be pumped under
normal usage?
, A. Every 6 months
B. Every 3–5 years
C. Every 10 years
D. Only when a backup occurs
Rationale: Pumping every 3–5 years prevents solids from overfilling and
clogging the drainfield.
8. The effluent from a septic tank flows into:
A. The municipal sewer
B. A surface water body
C. A drainfield or absorption field
D. An industrial treatment plant
Rationale: Septic systems are designed for on-site treatment; effluent
goes into a drainfield for soil filtration.
9. Which component separates solids from liquids in a septic tank?
A. Effluent filter
B. Baffles
C. Drainfield
D. Distribution box
Rationale: Baffles slow the flow of wastewater and prevent solids from
leaving the tank.
