SEPTIC LICENSE EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
Septic tanks are required to have all seams and drain holes sealed to make water tight. -
ANS true
all pretreatment units + distribution boxes are required to have KY approval numbers on them -
ANS true
equal-flow type distribution boxes may be installed on tamped sand or gravel - ANS true
highest hole in hill side box does not have to be connected to inlet pipe - ANS false
all distribution boxes shall be installed level - ANS true
certified installer must lay out a septic system prior to evacuation to assure that adequate fall
between components is possible - ANS 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 - ANS b. as light as possible to minimize soil
compaction
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,the minimum lateral trench depth is 24 inches - ANS false
soil + site conditions limit which type of on site sewage disposal system will work on a site -
ANS true
primary purpose of septic tank is to remove solids thru sewage thru settling - ANS true
soil structure indicates amount of large pore spaces in soil, which are important to absorb
sewage effluent from the lateral lines - ANS true
gray water systems contain discharge from these fixtures - ANS 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 -
ANS 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 - ANS 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 - ANS 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, d. presence of large flag stones
e. all above - ANS c. gray, green, blue or black colors in soil
certified installer must submit proposed system drawing prior to obtaining instillation permit -
ANS true
certified installer must lay out on site sewage system to determine if adequate fall is possible
between components - ANS 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?
a. bury tank deep enough in ground so no hump
b. install low profile septic tank
c. install regular septic tank + add fill soil dirt around tank so no hump left when yard is graded
d. either b or c - ANS d. both b + c = install low profile septic tank or
install regular septic tank + add fill soil dirt around tank so no hump left when yard is graded
wire test is
a. test to determine if electrical wiring properly installed
b. test to determine whether lateral lines installed level
c. field test to determine if soil moisture will cause damage during lateral line excavation
d. all above - ANS c. field test to determine if soil moisture will cause damage during lateral
line excavation
maximum length for individual conventional lateral trench is
a. 100 feet
b. 200 feet
c. no maximum limit
d. 70 feet - ANS b. 200 feet
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS 100% PASS
Septic tanks are required to have all seams and drain holes sealed to make water tight. -
ANS true
all pretreatment units + distribution boxes are required to have KY approval numbers on them -
ANS true
equal-flow type distribution boxes may be installed on tamped sand or gravel - ANS true
highest hole in hill side box does not have to be connected to inlet pipe - ANS false
all distribution boxes shall be installed level - ANS true
certified installer must lay out a septic system prior to evacuation to assure that adequate fall
between components is possible - ANS 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 - ANS b. as light as possible to minimize soil
compaction
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,the minimum lateral trench depth is 24 inches - ANS false
soil + site conditions limit which type of on site sewage disposal system will work on a site -
ANS true
primary purpose of septic tank is to remove solids thru sewage thru settling - ANS true
soil structure indicates amount of large pore spaces in soil, which are important to absorb
sewage effluent from the lateral lines - ANS true
gray water systems contain discharge from these fixtures - ANS 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 -
ANS 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 - ANS 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 - ANS 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, d. presence of large flag stones
e. all above - ANS c. gray, green, blue or black colors in soil
certified installer must submit proposed system drawing prior to obtaining instillation permit -
ANS true
certified installer must lay out on site sewage system to determine if adequate fall is possible
between components - ANS 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?
a. bury tank deep enough in ground so no hump
b. install low profile septic tank
c. install regular septic tank + add fill soil dirt around tank so no hump left when yard is graded
d. either b or c - ANS d. both b + c = install low profile septic tank or
install regular septic tank + add fill soil dirt around tank so no hump left when yard is graded
wire test is
a. test to determine if electrical wiring properly installed
b. test to determine whether lateral lines installed level
c. field test to determine if soil moisture will cause damage during lateral line excavation
d. all above - ANS c. field test to determine if soil moisture will cause damage during lateral
line excavation
maximum length for individual conventional lateral trench is
a. 100 feet
b. 200 feet
c. no maximum limit
d. 70 feet - ANS b. 200 feet
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
