CT Septic Exam Question with complete
Solutions New update 2026 Grade A+
QUESTIONS AND ANSWERS
What are the capacities for each side of a septic tank?. ANSWER -2/3 inlet side, 1/3 outlet
side
How many inches lower should the outlet be from the inlet in a septic tank?. ANSWER -3"
What information must be present on the outlet side of a septic tank?. 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?.
ANSWER -125 gallons
How many additional gallons per bedroom are required for each bedroom beyond 4?.
ANSWER -225 gallons
How far below finished grade can clean out and baffle inspection manholes be?. ANSWER -
No deeper than 12"
Tank riser covers shall be at least _________ lbs, or_______________________, or
_______________________________. 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?. 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?. ANSWER -In primary and reserve septic areas
How many inches maximum should a perc hole be?. ANSWER -12"
How many inches of water shall be used for a perc test presoak?. ANSWER -12"
How many inches of water shall be used for a perc test?. ANSWER -12"
How many consecutive readings shall be taken for a perc test. ANSWER -3
Perc test readings are measured to the nearest ______". ANSWER -1/8"
What is the perc rate calculation?. ANSWER -Time/Reading in inches
No leaching system shall be constructed in areas where:. ANSWER -- High groundwater
- Surface flooding
- Ledge rock
Leaching system shall be a minimum of 18" above:. ANSWER -- Groundwater
- Mottling
- Hardpan
Leaching system shall be ____' above ledge or fractured rock. ANSWER -4'
Leaching system shall be ____" above decomposing ledge (rock). ANSWER -24"
Solutions New update 2026 Grade A+
QUESTIONS AND ANSWERS
What are the capacities for each side of a septic tank?. ANSWER -2/3 inlet side, 1/3 outlet
side
How many inches lower should the outlet be from the inlet in a septic tank?. ANSWER -3"
What information must be present on the outlet side of a septic tank?. 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?.
ANSWER -125 gallons
How many additional gallons per bedroom are required for each bedroom beyond 4?.
ANSWER -225 gallons
How far below finished grade can clean out and baffle inspection manholes be?. ANSWER -
No deeper than 12"
Tank riser covers shall be at least _________ lbs, or_______________________, or
_______________________________. 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?. 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?. ANSWER -In primary and reserve septic areas
How many inches maximum should a perc hole be?. ANSWER -12"
How many inches of water shall be used for a perc test presoak?. ANSWER -12"
How many inches of water shall be used for a perc test?. ANSWER -12"
How many consecutive readings shall be taken for a perc test. ANSWER -3
Perc test readings are measured to the nearest ______". ANSWER -1/8"
What is the perc rate calculation?. ANSWER -Time/Reading in inches
No leaching system shall be constructed in areas where:. ANSWER -- High groundwater
- Surface flooding
- Ledge rock
Leaching system shall be a minimum of 18" above:. ANSWER -- Groundwater
- Mottling
- Hardpan
Leaching system shall be ____' above ledge or fractured rock. ANSWER -4'
Leaching system shall be ____" above decomposing ledge (rock). ANSWER -24"
