SEPTIC LICENSE EXAM SCRIPT 2026
COMPLETE QUESTIONS AND ANSWERS
100% CORRECT
●● 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
COMPLETE QUESTIONS AND ANSWERS
100% CORRECT
●● 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
