Septic License Exam2025/2026 – Real Practice
Questions with Correct Answers
Septic tanks are required to have all seams and drain holes sealed to make water
tight.
true
all pretreatment units + distribution boxes are required to have KY approval
numbers on them
true
equal-flow type distribution boxes may be installed on tamped sand or gravel
true
highest hole in hill side box does not have to be connected to inlet pipe
false
,all distribution boxes shall be installed level
true
certified installer must lay out a septic system prior to evacuation to assure that
adequate fall between components is possible
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
b. as light as possible to minimize soil compaction
the minimum lateral trench depth is 24 inches
false
soil + site conditions limit which type of on site sewage disposal system will work
on a site
true
,primary purpose of septic tank is to remove solids thru sewage thru settling
true
soil structure indicates amount of large pore spaces in soil, which are important to
absorb sewage effluent from the lateral lines
true
gray water systems contain discharge from these fixtures
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
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
, 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
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
c. gray, green, blue or black colors in soil
certified installer must submit proposed system drawing prior to obtaining
instillation permit
true
Questions with Correct Answers
Septic tanks are required to have all seams and drain holes sealed to make water
tight.
true
all pretreatment units + distribution boxes are required to have KY approval
numbers on them
true
equal-flow type distribution boxes may be installed on tamped sand or gravel
true
highest hole in hill side box does not have to be connected to inlet pipe
false
,all distribution boxes shall be installed level
true
certified installer must lay out a septic system prior to evacuation to assure that
adequate fall between components is possible
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
b. as light as possible to minimize soil compaction
the minimum lateral trench depth is 24 inches
false
soil + site conditions limit which type of on site sewage disposal system will work
on a site
true
,primary purpose of septic tank is to remove solids thru sewage thru settling
true
soil structure indicates amount of large pore spaces in soil, which are important to
absorb sewage effluent from the lateral lines
true
gray water systems contain discharge from these fixtures
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
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
, 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
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
c. gray, green, blue or black colors in soil
certified installer must submit proposed system drawing prior to obtaining
instillation permit
true
