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Illinois Private Sewage Pumping Contractor Licensing
Exam Actual Verified Exam Questions with Correct
Answers and explanations LATEST THIS YEAR -JUST
RELEASED.pdf||NEWEST EXAM!!!
Creviced Limestone Formation - Answer-SS system
cannot be installed where bottom of system is less than 4'
from top of limestone
If limestone is known to be present a soil test must be
done @ least 4' deeper than where the bottom of the
trench will be
How far away can quick disconnect be? - Answer-no more
than 50' away from the device & w/in sight of
Experimental Use Permits - Answer-min. of 10
experimental systems installed b4 unconditional approval
granted. Permit valid for 2 yrs & evaluated @ end of 2 yrs.
2 options for garbage grinders - Answer-1. solids retention
tank btwn WW source & septic tk. for kitchen waste only.
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Needs to be 50% of the size of the designed septic tank w/
a min. of 500 gals.
2. A septic tank receiving all flows sized as 50% of the
septic tank size + septic tank size. i.e., septic tk = 1500
gals. /2 = 750 + 1500 = 2250 (would need 2500 gal tk)
How long should a homeowner keep maint. records for
their system? - Answer-the life of the system
When should the 1st maintenance of a septic tank after
installation be completed for a residence? - Answer-Prior
to or within 3 yrs. After initial inspection it can be done
once every 5 yrs. Can be done by everyone + homeowner
Public Sewer Connection - Answer-Private residence must
connect if w/in 300' or for any commercial bldg. w/in 300'
that has flows less than 1500 gpd. Commercial w/ flows =
to or greater than 1500 gpd must connect if sewer is w/in
1000'.
Unless physical barrier, ordinance, or cannot be done w/
individual line (4" line)-then PSD system is OK.
Acceptable Pipe Materials - Answer-Vitrified clay, ductile
iron, or plastic.
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Anything after the tank or from distribution box has to be
vitrified clay or plastic.
Schedule 40 or Greater - Answer-under roads, driveways,
or parking areas
Gravity Slope - Answer-Diameter: 4" pipe + min. slope of
12" per 100'
Building sewers in excess of 50' should have what? -
Answer-A C/O @ least every 50' from building to tank,
distribution box, or ATU
If sludge layer /suspended solids are greater than 33% . . .
- Answer-Must pump tank and perform maintenance
When should a septic system be evaluated initially after
installation for a non-residential bldg? - Answer-prior to or
w/in 3 yrs. After that it should be done @ least every 3 yrs.
Owner cannot do. has to be engineer, env. health
practitioner, member of dept, HD, or septic contractor
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Aerobic Treatment Unit Evaluations - Answer-1 every 6
mos @ least (same ppl) + HOMEOWNER as long as they
follow manufacturer's requirements & proper maintenance
What is the maint. schedule for SFs & WSPs w/ surface
discharges? - Answer-@ least 1 per yr. + H.O. if rules r
followed. Pumped when solids & scum greater than 33%
Can a H.O. install & maintain a septic system on his/her
property? - Answer-Yes
Who can perform the excavation for a septic system? -
Answer-A licensed installer (employee while supervised)
or the property owner.
What is the min. size tank for flows UP TO 500 gpd? -
Answer-750 gals.
If flows are greater than 500 gpd, how do you size the
tank? - Answer-Tank size should be = to @ least 1.5x the
estimated sewage flow
Illinois Private Sewage Pumping Contractor Licensing
Exam Actual Verified Exam Questions with Correct
Answers and explanations LATEST THIS YEAR -JUST
RELEASED.pdf||NEWEST EXAM!!!
Creviced Limestone Formation - Answer-SS system
cannot be installed where bottom of system is less than 4'
from top of limestone
If limestone is known to be present a soil test must be
done @ least 4' deeper than where the bottom of the
trench will be
How far away can quick disconnect be? - Answer-no more
than 50' away from the device & w/in sight of
Experimental Use Permits - Answer-min. of 10
experimental systems installed b4 unconditional approval
granted. Permit valid for 2 yrs & evaluated @ end of 2 yrs.
2 options for garbage grinders - Answer-1. solids retention
tank btwn WW source & septic tk. for kitchen waste only.
,2|Page
Needs to be 50% of the size of the designed septic tank w/
a min. of 500 gals.
2. A septic tank receiving all flows sized as 50% of the
septic tank size + septic tank size. i.e., septic tk = 1500
gals. /2 = 750 + 1500 = 2250 (would need 2500 gal tk)
How long should a homeowner keep maint. records for
their system? - Answer-the life of the system
When should the 1st maintenance of a septic tank after
installation be completed for a residence? - Answer-Prior
to or within 3 yrs. After initial inspection it can be done
once every 5 yrs. Can be done by everyone + homeowner
Public Sewer Connection - Answer-Private residence must
connect if w/in 300' or for any commercial bldg. w/in 300'
that has flows less than 1500 gpd. Commercial w/ flows =
to or greater than 1500 gpd must connect if sewer is w/in
1000'.
Unless physical barrier, ordinance, or cannot be done w/
individual line (4" line)-then PSD system is OK.
Acceptable Pipe Materials - Answer-Vitrified clay, ductile
iron, or plastic.
,3|Page
Anything after the tank or from distribution box has to be
vitrified clay or plastic.
Schedule 40 or Greater - Answer-under roads, driveways,
or parking areas
Gravity Slope - Answer-Diameter: 4" pipe + min. slope of
12" per 100'
Building sewers in excess of 50' should have what? -
Answer-A C/O @ least every 50' from building to tank,
distribution box, or ATU
If sludge layer /suspended solids are greater than 33% . . .
- Answer-Must pump tank and perform maintenance
When should a septic system be evaluated initially after
installation for a non-residential bldg? - Answer-prior to or
w/in 3 yrs. After that it should be done @ least every 3 yrs.
Owner cannot do. has to be engineer, env. health
practitioner, member of dept, HD, or septic contractor
, 4|Page
Aerobic Treatment Unit Evaluations - Answer-1 every 6
mos @ least (same ppl) + HOMEOWNER as long as they
follow manufacturer's requirements & proper maintenance
What is the maint. schedule for SFs & WSPs w/ surface
discharges? - Answer-@ least 1 per yr. + H.O. if rules r
followed. Pumped when solids & scum greater than 33%
Can a H.O. install & maintain a septic system on his/her
property? - Answer-Yes
Who can perform the excavation for a septic system? -
Answer-A licensed installer (employee while supervised)
or the property owner.
What is the min. size tank for flows UP TO 500 gpd? -
Answer-750 gals.
If flows are greater than 500 gpd, how do you size the
tank? - Answer-Tank size should be = to @ least 1.5x the
estimated sewage flow
