SEPTIC LICENSE EXAM Q&A 2026 STUDY
GUIDE WITH FULL SOLUTIONS
◉ all pretreatment units + distribution boxes are required to have KY
approval numbers on them. Answer: true
◉ equal-flow type distribution boxes may be installed on tamped sand or
gravel. Answer: true
◉ highest hole in hill side box does not have to be connected to inlet
pipe. Answer: false
◉ all distribution boxes shall be installed level. Answer: true
◉ certified installer must lay out a septic system prior to evacuation to
assure that adequate fall between components is possible. Answer: true
◉ equipment used in constructing aseptic system should be:
a. as heavy as possible to maximize soil compaction
b. as light as possible to minimize soil compaction
c. equipment weight does not matter. Answer: b. as light as possible to
minimize soil compaction
,◉ the minimum lateral trench depth is 24 inches. Answer: false
◉ soil + site conditions limit which type of on site sewage disposal
system will work on a site. Answer: true
◉ primary purpose of septic tank is to remove solids thru sewage thru
settling. Answer: true
◉ soil structure indicates amount of large pore spaces in soil, which are
important to absorb sewage effluent from the lateral lines. Answer: true
◉ gray water systems contain discharge from these fixtures. Answer:
laundry, hand wash sink, shower, bathtubs, laundry tubs
◉ what is not considered gray water?
laundry, hand wash sink, shower, bathtubs, laundry tubs, food prep sink,
kitchen sink. Answer: food prep sink + kitchen sink
◉ slopes greater than 15% may be unstable when on-site sewage
disposable systems installed on them unless special designs
modifications made. Answer: true
, ◉ what natural process removes most of sewage effluent from lateral
trench?
a. evaporation
b. gravity flow
c. bacterial action
d. uptake by trees + grass. Answer: b. gravity flow
◉ seasonal water tables can be identified in dry months by
a. orange + red colors in soil
b. direct presence of water in soil when sampled
c. gray, green, blue or black colors in soil
d. presence of large flag stones
e. all above. Answer: c. gray, green, blue or black colors in soil
◉ certified installer must submit proposed system drawing prior to
obtaining instillation permit. Answer: true
◉ certified installer must lay out on site sewage system to determine if
adequate fall is possible between components. Answer: true
◉ you obtain permit to install system with lateral trenches no deeper
than 10 inches. if home builder tells you that they do not want septic
tank leaving hump in yard. what do you do?
GUIDE WITH FULL SOLUTIONS
◉ all pretreatment units + distribution boxes are required to have KY
approval numbers on them. Answer: true
◉ equal-flow type distribution boxes may be installed on tamped sand or
gravel. Answer: true
◉ highest hole in hill side box does not have to be connected to inlet
pipe. Answer: false
◉ all distribution boxes shall be installed level. Answer: true
◉ certified installer must lay out a septic system prior to evacuation to
assure that adequate fall between components is possible. Answer: true
◉ equipment used in constructing aseptic system should be:
a. as heavy as possible to maximize soil compaction
b. as light as possible to minimize soil compaction
c. equipment weight does not matter. Answer: b. as light as possible to
minimize soil compaction
,◉ the minimum lateral trench depth is 24 inches. Answer: false
◉ soil + site conditions limit which type of on site sewage disposal
system will work on a site. Answer: true
◉ primary purpose of septic tank is to remove solids thru sewage thru
settling. Answer: true
◉ soil structure indicates amount of large pore spaces in soil, which are
important to absorb sewage effluent from the lateral lines. Answer: true
◉ gray water systems contain discharge from these fixtures. Answer:
laundry, hand wash sink, shower, bathtubs, laundry tubs
◉ what is not considered gray water?
laundry, hand wash sink, shower, bathtubs, laundry tubs, food prep sink,
kitchen sink. Answer: food prep sink + kitchen sink
◉ slopes greater than 15% may be unstable when on-site sewage
disposable systems installed on them unless special designs
modifications made. Answer: true
, ◉ what natural process removes most of sewage effluent from lateral
trench?
a. evaporation
b. gravity flow
c. bacterial action
d. uptake by trees + grass. Answer: b. gravity flow
◉ seasonal water tables can be identified in dry months by
a. orange + red colors in soil
b. direct presence of water in soil when sampled
c. gray, green, blue or black colors in soil
d. presence of large flag stones
e. all above. Answer: c. gray, green, blue or black colors in soil
◉ certified installer must submit proposed system drawing prior to
obtaining instillation permit. Answer: true
◉ certified installer must lay out on site sewage system to determine if
adequate fall is possible between components. Answer: true
◉ you obtain permit to install system with lateral trenches no deeper
than 10 inches. if home builder tells you that they do not want septic
tank leaving hump in yard. what do you do?
