CT SEPTIC LICENSE EXAM QUESTIONS AND ANSWERS LATEST UPDATE

CT SEPTIC LICENSE EXAM QUESTIONS AND
ANSWERS LATEST 2025-2026 UPDATE

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"


Where underlying natural soil has a perc rate faster than one minute per
inch, the bottom shall not be less than ____' above ledge rock - Answer-
8'

, Where underlying natural soil has a perc rate faster than one minute per
inch, the bottom shall not be less than ____" above maximum
groundwater - Answer-24"


In a gravity system leaching field, what is the maximum length from
either side of a d-box? - Answer-75'


For intermittent dosing, what is the maximum length from either side of
a d-box? - Answer-100'


What is the minimum soil coverage over a leach field? - Answer-6"


Center to center spacing on all leach fields is ____' - Answer-7'


What is the MLSS formula" - Answer-MLSS=FF (Flow factor) x PF
(Perc factor) x HF (Hydraulic factor)


What is the FF formula for up to 3 BR house? - Answer-(#BR x 150
GPD)/300 GPD = FF


What is the FF formula for more than 3 BR house? - Answer-((3 BR x
150 GPD) + ((total BR - 3)x75))/300 GPD = FF


What is the calculation for % slope? - Answer-Rise/Run x 100