CT Septic License Exam Latest Update
2025 With Complete Questions And
Correct Answers Graded A+
What are the capacities for each side of a septic tank? -correct answer2/3 inlet side, 1/3
outlet side
How many inches lower should the outlet be from the inlet in a septic tank? -correct
answer3"
What information must be present on the outlet side of a septic tank? -correct answer-
Name of manufacturer
- Date manufactured
- Size of tank in gallons
- External load limit
- Warning placard
How many additional gallons per bedroom are required for each bedroom beyond 3? -
correct answer125 gallons
How many additional gallons per bedroom are required for each bedroom beyond 4? -
correct answer225 gallons
, How far below finished grade can clean out and baffle inspection manholes be? -correct
answerNo deeper than 12"
Tank riser covers shall be at least _________ lbs, or_______________________, or
_______________________________ -correct answer59 lbs, tank covers shall remain
on tank clean outs, a secondary safety device shall be provided
What are the 3 main functions of a septic tank? -correct answer1. Removes most of the
settleable solids
2. Provides and effluent of relatively uniform physical, chemical and biological
characteristics
3. Provides some reduction in pollution levels in the effluent
Where should perc tests be conducted? -correct answerIn primary and reserve septic
areas
How many inches maximum should a perc hole be? -correct answer12"
How many inches of water shall be used for a perc test presoak? -correct answer12"
How many inches of water shall be used for a perc test? -correct answer12"
How many consecutive readings shall be taken for a perc test -correct answer3
Perc test readings are measured to the nearest ______" -correct answer1/8"
What is the perc rate calculation? -correct answerTime/Reading in inches
No leaching system shall be constructed in areas where: -correct answer- High
groundwater
- Surface flooding
- Ledge rock
Leaching system shall be a minimum of 18" above: -correct answer- Groundwater
- Mottling
- Hardpan
Leaching system shall be ____' above ledge or fractured rock -correct answer4'
Leaching system shall be ____" above decomposing ledge (rock) -correct answer24"
Where underlying natural soil has a perc rate faster than one minute per inch, the
bottom shall not be less than ____' above ledge rock -correct answer8'
Where underlying natural soil has a perc rate faster than one minute per inch, the
bottom shall not be less than ____" above maximum groundwater -correct answer24"
2025 With Complete Questions And
Correct Answers Graded A+
What are the capacities for each side of a septic tank? -correct answer2/3 inlet side, 1/3
outlet side
How many inches lower should the outlet be from the inlet in a septic tank? -correct
answer3"
What information must be present on the outlet side of a septic tank? -correct answer-
Name of manufacturer
- Date manufactured
- Size of tank in gallons
- External load limit
- Warning placard
How many additional gallons per bedroom are required for each bedroom beyond 3? -
correct answer125 gallons
How many additional gallons per bedroom are required for each bedroom beyond 4? -
correct answer225 gallons
, How far below finished grade can clean out and baffle inspection manholes be? -correct
answerNo deeper than 12"
Tank riser covers shall be at least _________ lbs, or_______________________, or
_______________________________ -correct answer59 lbs, tank covers shall remain
on tank clean outs, a secondary safety device shall be provided
What are the 3 main functions of a septic tank? -correct answer1. Removes most of the
settleable solids
2. Provides and effluent of relatively uniform physical, chemical and biological
characteristics
3. Provides some reduction in pollution levels in the effluent
Where should perc tests be conducted? -correct answerIn primary and reserve septic
areas
How many inches maximum should a perc hole be? -correct answer12"
How many inches of water shall be used for a perc test presoak? -correct answer12"
How many inches of water shall be used for a perc test? -correct answer12"
How many consecutive readings shall be taken for a perc test -correct answer3
Perc test readings are measured to the nearest ______" -correct answer1/8"
What is the perc rate calculation? -correct answerTime/Reading in inches
No leaching system shall be constructed in areas where: -correct answer- High
groundwater
- Surface flooding
- Ledge rock
Leaching system shall be a minimum of 18" above: -correct answer- Groundwater
- Mottling
- Hardpan
Leaching system shall be ____' above ledge or fractured rock -correct answer4'
Leaching system shall be ____" above decomposing ledge (rock) -correct answer24"
Where underlying natural soil has a perc rate faster than one minute per inch, the
bottom shall not be less than ____' above ledge rock -correct answer8'
Where underlying natural soil has a perc rate faster than one minute per inch, the
bottom shall not be less than ____" above maximum groundwater -correct answer24"
