FLORIDA (FL) SEPTIC TANK CONTRACTOR EXAM | 2
CURRENTLY TESTING EXAM VERSIONS WITH ACCURATE
REAL EXAM QUESTIONS AND ANSWERS WITH
RATIONALES | EXPERT VERIFIED FOR GUARANTEED PASS |
LATEST UPDATE
1
The minimum horizontal distance between a septic tank and a private well in Florida is:
A. 50 ft
B. 75 ft
C. 100 ft
D. 125 ft
Answer: B
Rationale: Florida Department of Health (DOH) rules (64E-6 F.A.C.) require a 75-ft separation
to protect groundwater from contamination.
2
Which soil characteristic most strongly affects the absorption capacity of a drainfield?
A. Color
B. Permeability
C. Bulk density
D. Organic content
Answer: B
Rationale: Permeability controls how quickly effluent percolates; it dictates trench size and
system design.
3
,If a proposed drainfield site has a seasonal high water table 18 in. below grade, the minimum
required fill above natural grade is:
A. None
B. 6 in.
C. 24 in.
D. 36 in.
Answer: C
Rationale: Florida code requires at least 24 in. of separation between the bottom of the
drainfield and the seasonal high water table.
4
Which septic system component provides primary treatment by settling solids?
A. Drainfield
B. Effluent filter
C. Septic tank
D. Distribution box
Answer: C
Rationale: The septic tank allows solids to settle and scum to float, providing primary treatment
before effluent reaches the drainfield.
5
When dosing a mound system, the pump chamber must include:
A. Two discharge pumps
B. High-water alarm
C. Chlorine tablet dispenser
D. UV light
Answer: B
Rationale: A high-water alarm alerts to pump or power failures, preventing overflow or backup.
,6
The recommended minimum slope of a gravity building sewer (under 4 in. diameter) is:
A. 1/16 in. per ft
B. 1/8 in. per ft
C. 1/4 in. per ft
D. 1/2 in. per ft
Answer: C
Rationale: Uniform 1/4 in. per foot slope ensures self-cleansing velocity without scouring.
7
What is the maximum design flow for a residential system based on three bedrooms under
Florida code?
A. 250 gpd
B. 300 gpd
C. 450 gpd
D. 600 gpd
Answer: C
Rationale: Florida design flow is 150 gpd per bedroom; three bedrooms × 150 = 450 gpd.
8
Which test determines seasonal high water table when no mottling is observed?
A. Sieve analysis
B. Percolation test
C. Soil borings with piezometers
D. Double-ring infiltrometer
Answer: C
, Rationale: Monitoring wells (piezometers) reveal water table fluctuations where mottling is
absent.
9
The preferred material for modern septic tanks in Florida is:
A. Steel
B. Reinforced concrete
C. Brick
D. Aluminum
Answer: B
Rationale: Reinforced concrete resists corrosion and meets structural requirements; steel is
prone to rust.
10
Before backfilling around a newly installed septic tank, the contractor must:
A. Add chlorine
B. Fill the tank with water
C. Install landscaping
D. Vent the tank
Answer: B
Rationale: Filling prevents flotation or wall collapse during backfill.
11
A pump tank must have a minimum liquid capacity equal to:
A. 50 % of daily flow
B. 100 % of daily flow
C. 150 % of daily flow
D. Twice the daily flow
CURRENTLY TESTING EXAM VERSIONS WITH ACCURATE
REAL EXAM QUESTIONS AND ANSWERS WITH
RATIONALES | EXPERT VERIFIED FOR GUARANTEED PASS |
LATEST UPDATE
1
The minimum horizontal distance between a septic tank and a private well in Florida is:
A. 50 ft
B. 75 ft
C. 100 ft
D. 125 ft
Answer: B
Rationale: Florida Department of Health (DOH) rules (64E-6 F.A.C.) require a 75-ft separation
to protect groundwater from contamination.
2
Which soil characteristic most strongly affects the absorption capacity of a drainfield?
A. Color
B. Permeability
C. Bulk density
D. Organic content
Answer: B
Rationale: Permeability controls how quickly effluent percolates; it dictates trench size and
system design.
3
,If a proposed drainfield site has a seasonal high water table 18 in. below grade, the minimum
required fill above natural grade is:
A. None
B. 6 in.
C. 24 in.
D. 36 in.
Answer: C
Rationale: Florida code requires at least 24 in. of separation between the bottom of the
drainfield and the seasonal high water table.
4
Which septic system component provides primary treatment by settling solids?
A. Drainfield
B. Effluent filter
C. Septic tank
D. Distribution box
Answer: C
Rationale: The septic tank allows solids to settle and scum to float, providing primary treatment
before effluent reaches the drainfield.
5
When dosing a mound system, the pump chamber must include:
A. Two discharge pumps
B. High-water alarm
C. Chlorine tablet dispenser
D. UV light
Answer: B
Rationale: A high-water alarm alerts to pump or power failures, preventing overflow or backup.
,6
The recommended minimum slope of a gravity building sewer (under 4 in. diameter) is:
A. 1/16 in. per ft
B. 1/8 in. per ft
C. 1/4 in. per ft
D. 1/2 in. per ft
Answer: C
Rationale: Uniform 1/4 in. per foot slope ensures self-cleansing velocity without scouring.
7
What is the maximum design flow for a residential system based on three bedrooms under
Florida code?
A. 250 gpd
B. 300 gpd
C. 450 gpd
D. 600 gpd
Answer: C
Rationale: Florida design flow is 150 gpd per bedroom; three bedrooms × 150 = 450 gpd.
8
Which test determines seasonal high water table when no mottling is observed?
A. Sieve analysis
B. Percolation test
C. Soil borings with piezometers
D. Double-ring infiltrometer
Answer: C
, Rationale: Monitoring wells (piezometers) reveal water table fluctuations where mottling is
absent.
9
The preferred material for modern septic tanks in Florida is:
A. Steel
B. Reinforced concrete
C. Brick
D. Aluminum
Answer: B
Rationale: Reinforced concrete resists corrosion and meets structural requirements; steel is
prone to rust.
10
Before backfilling around a newly installed septic tank, the contractor must:
A. Add chlorine
B. Fill the tank with water
C. Install landscaping
D. Vent the tank
Answer: B
Rationale: Filling prevents flotation or wall collapse during backfill.
11
A pump tank must have a minimum liquid capacity equal to:
A. 50 % of daily flow
B. 100 % of daily flow
C. 150 % of daily flow
D. Twice the daily flow
