CT Septic License Exam 2026 Questions
and Answers Graded A+
What are the capacities for each side of a septic tank? - Correct answer-2/3 inlet
side, 1/3 outlet side
How many inches lower should the outlet be from the inlet in a septic tank? -
Correct answer-3"
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 answer-125 gallons
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, How many additional gallons per bedroom are required for each bedroom beyond
4? - Correct answer-225 gallons
How far below finished grade can clean out and baffle inspection manholes be? -
Correct answer-No deeper than 12"
Tank riser covers shall be at least _________ lbs, or_______________________,
or _______________________________ - Correct answer-59 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 answer-1. 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 answer-In primary and reserve
septic areas
How many inches maximum should a perc hole be? - Correct answer-12"
How many inches of water shall be used for a perc test presoak? - Correct answer-
12"
How many inches of water shall be used for a perc test? - Correct answer-12"
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
and Answers Graded A+
What are the capacities for each side of a septic tank? - Correct answer-2/3 inlet
side, 1/3 outlet side
How many inches lower should the outlet be from the inlet in a septic tank? -
Correct answer-3"
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 answer-125 gallons
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, How many additional gallons per bedroom are required for each bedroom beyond
4? - Correct answer-225 gallons
How far below finished grade can clean out and baffle inspection manholes be? -
Correct answer-No deeper than 12"
Tank riser covers shall be at least _________ lbs, or_______________________,
or _______________________________ - Correct answer-59 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 answer-1. 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 answer-In primary and reserve
septic areas
How many inches maximum should a perc hole be? - Correct answer-12"
How many inches of water shall be used for a perc test presoak? - Correct answer-
12"
How many inches of water shall be used for a perc test? - Correct answer-12"
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2