MOUND QUESTIONS WITH DETAILED VERIFIED
AND 100% ACCURATE ANSWERS
ON-SITE SEWAGE MANAGEMENT SYSTEMS PRACTICE EXAM
Georgia and Wisconsin Mound Systems Combined Focus
SECTION 1: GEORGIA REGULATORY REQUIREMENTS
Question 1
What is the minimum liquid capacity required for a septic tank serving a single-
family dwelling with four bedrooms in Georgia?
A. 750 gallons
B. 1,000 gallons
C. 1,250 gallons
D. 1,500 gallons
Answer: B
Explanation: Georgia Rule 511-3-1-.05 specifies that septic tanks for single-family
dwellings shall have a liquid capacity of 1,000 gallons for one, two, three, or four
bedrooms. An additional 250 gallons is required for each bedroom over four .
Question 2
In Georgia, no septic tank shall be installed less than how many feet from existing
or proposed wells?
,A. 25 feet
B. 50 feet
C. 75 feet
D. 100 feet
Answer: B
Explanation: Georgia regulations require a minimum separation distance of 50
feet between septic tanks and existing or proposed wells, springs, sinkholes, or
suction water lines. Tanks should also be located downgrade from wells or springs
if physically possible .
Question 3
What is the minimum separation distance required between a septic tank and a
property line in Georgia?
A. 5 feet
B. 10 feet
C. 15 feet
D. 25 feet
Answer: B
Explanation: Georgia Rule 511-3-1-.05(2) states that no septic tank shall be
installed less than 10 feet from a property line. The same 10-foot minimum
applies to pressure water supply lines .
Question 4
In Georgia, septic tank capacity must be increased by what percentage if a
garbage grinder is to be used?
A. 25%
B. 50%
,C. 75%
D. 100%
Answer: B
Explanation: Georgia regulations mandate that septic tank capacity shall be
increased by 50% when a garbage grinder is installed. This accounts for the
additional organic loading and solids introduced by food waste disposal .
Question 5
What is the minimum required size of the first compartment in a two-
compartment septic tank in Georgia?
A. 1/2 of the total liquid capacity
B. 2/3 of the total liquid capacity
C. 3/4 of the total liquid capacity
D. Equal to the second compartment
Answer: B
Explanation: Georgia Rule 511-3-1-.05(4) requires two-compartment tanks, with
the first compartment being at least 2/3 of the total liquid capacity of the tank.
This design allows for better settling and prevents short-circuiting of effluent .
Question 6
When tanks are installed in series in Georgia, what is the minimum required
capacity of the first tank?
A. 500 gallons
B. 750 gallons
C. 1,000 gallons
D. 1,500 gallons
Answer: C
, Explanation: When tanks in series are approved as equivalent to a
compartmented tank, the first tank must be at least 1,000 gallons and equal to
2/3 of the required liquid capacity. All sewage must initially enter the first tank,
and tanks must be connected with a sealed sewer line .
Question 7
What is the minimum earth cover recommended over a septic tank in Georgia?
A. 3 inches
B. 6 inches
C. 12 inches
D. 18 inches
Answer: B
Explanation: Georgia regulations recommend a minimum earth cover of 6 inches
over the septic tank. With proper documentation, the County Board of Health may
approve less cover. All openings, risers, and manholes must be constructed to
prevent surface water entrance .
Question 8
In Georgia, what type of filter must be installed on the outlet end of a septic tank?
A. Sand filter
B. An approved filter per the Manual for On-Site Sewage Management Systems
C. Carbon filter
D. UV filter
Answer: B
Explanation: Georgia Rule 511-3-1-.05(1) requires that an approved filter be
installed on the outlet end of the septic tank in compliance with the Manual for
On-Site Sewage Management Systems. Both inlet and outlet tees must be ASTM
3034 rated or equivalent .