ILLINOIS PRIVATE SEWAGE CONTRACTOR
EXAM WITH CORRECT ACTUAL QUESTIONS
AND CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
A single compartment tank needs to have a gas deflection baffle provided
__________ the outlet of the baffle. - ANSWERS-Below
Access Manhole Requirements - ANSWERS-Above the Inlet of the Tank
Above the Outlet of the Tank
12" in Diameter
Less than 12" from surface
Maximum Capacity of Single Compartment Tank - ANSWERS-1350 Gallons Per
Day
,The volume of septic below the liquid level for flows less than 500 Gallons = -
ANSWERS-750 Gallons
The volume of septic below the liquid level for flows greater than 500 Gallons =
- ANSWERS-Daily Flow X 1.5
1000 Gallons per day = 1,500 Gallons
The use of a private sewage disposal system to service more than one property
is: - ANSWERS-Prohibited except when common property under joint ownership
is provided or where the system is under public jurisdiction
Sewers are to be installed at least ______ feet horizontally from an existing or
proposed water line. - ANSWERS-10 Feet Horizontally
If the distance between the sewer and water line must be less than 10 feet
horizontally then the sewer line must be at least __________ inches below the
invert of the water line. - ANSWERS-18"
Approved Pipe Materials - ANSWERS-Ductile Iron, Vitrified Clay, or Plastic at
least 4" in diameter
Raw or improperly treated domestic sewage cannot be discharged into: -
ANSWERS-Farm tiles
Streams
, Rivers
Ponds
Lakes
Other collectors of water.
Septic Tanks cannot be located: - ANSWERS-Where surface water will
accumulate
or near:
Driveways
Accessory building
Swimming pools
Parking areas
Buried lawn sprinklers
Underground utilities
Patios
Slabs
Basically Any Structure
Approved Private Sewage Disposal Systems - ANSWERS-Septic/Imhoff/Aerobic
Treatment Plant Tanks followed by:
Subsurface Seepage Field
Seepage Bed
EXAM WITH CORRECT ACTUAL QUESTIONS
AND CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
A single compartment tank needs to have a gas deflection baffle provided
__________ the outlet of the baffle. - ANSWERS-Below
Access Manhole Requirements - ANSWERS-Above the Inlet of the Tank
Above the Outlet of the Tank
12" in Diameter
Less than 12" from surface
Maximum Capacity of Single Compartment Tank - ANSWERS-1350 Gallons Per
Day
,The volume of septic below the liquid level for flows less than 500 Gallons = -
ANSWERS-750 Gallons
The volume of septic below the liquid level for flows greater than 500 Gallons =
- ANSWERS-Daily Flow X 1.5
1000 Gallons per day = 1,500 Gallons
The use of a private sewage disposal system to service more than one property
is: - ANSWERS-Prohibited except when common property under joint ownership
is provided or where the system is under public jurisdiction
Sewers are to be installed at least ______ feet horizontally from an existing or
proposed water line. - ANSWERS-10 Feet Horizontally
If the distance between the sewer and water line must be less than 10 feet
horizontally then the sewer line must be at least __________ inches below the
invert of the water line. - ANSWERS-18"
Approved Pipe Materials - ANSWERS-Ductile Iron, Vitrified Clay, or Plastic at
least 4" in diameter
Raw or improperly treated domestic sewage cannot be discharged into: -
ANSWERS-Farm tiles
Streams
, Rivers
Ponds
Lakes
Other collectors of water.
Septic Tanks cannot be located: - ANSWERS-Where surface water will
accumulate
or near:
Driveways
Accessory building
Swimming pools
Parking areas
Buried lawn sprinklers
Underground utilities
Patios
Slabs
Basically Any Structure
Approved Private Sewage Disposal Systems - ANSWERS-Septic/Imhoff/Aerobic
Treatment Plant Tanks followed by:
Subsurface Seepage Field
Seepage Bed
