WV Septic Installer Practice – Set
#1EXAM NEWEST 2026 WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What is the minimum septic tank size required for a single-family dwelling with up to 4
bedrooms in WV? -CORRECTANSWER 1,000 gallons
For each bedroom beyond 4, how many gallons must be added to the minimum septic
tank size? -CORRECTANSWER 250 gallons
True or False: Metal septic tanks are approved for use in West Virginia. -
CORRECTANSWER False
What is the required minimum clearance between a septic tank and a private water
well? -CORRECTANSWER 50 feet
True or False: A soil absorption system may be installed under a driveway or parking
lot. -CORRECTANSWER False
What is the minimum trench depth allowed for a standard soil absorption system? -
CORRECTANSWER 18 inches
, What is the maximum trench depth for a standard soil absorption system? -
CORRECTANSWER 36 inches
How many inches of gravel must be placed beneath the distribution pipe in a trench? -
CORRECTANSWER 6 inches
How many inches of gravel must be placed above the distribution pipe? -
CORRECTANSWER 2 inches
True or False: The invert of the septic tank inlet must be at least 2 inches higher than
the outlet invert. -CORRECTANSWER True
Which type of distribution system is required on sloping ground? -CORRECTANSWER
Serial distribution
At what slope percentage are soil absorption systems prohibited? -CORRECTANSWER
More than 25%
True or False: Effluent from an upslope trench must flow to the downslope trench in
serial distribution. -CORRECTANSWER True
#1EXAM NEWEST 2026 WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
What is the minimum septic tank size required for a single-family dwelling with up to 4
bedrooms in WV? -CORRECTANSWER 1,000 gallons
For each bedroom beyond 4, how many gallons must be added to the minimum septic
tank size? -CORRECTANSWER 250 gallons
True or False: Metal septic tanks are approved for use in West Virginia. -
CORRECTANSWER False
What is the required minimum clearance between a septic tank and a private water
well? -CORRECTANSWER 50 feet
True or False: A soil absorption system may be installed under a driveway or parking
lot. -CORRECTANSWER False
What is the minimum trench depth allowed for a standard soil absorption system? -
CORRECTANSWER 18 inches
, What is the maximum trench depth for a standard soil absorption system? -
CORRECTANSWER 36 inches
How many inches of gravel must be placed beneath the distribution pipe in a trench? -
CORRECTANSWER 6 inches
How many inches of gravel must be placed above the distribution pipe? -
CORRECTANSWER 2 inches
True or False: The invert of the septic tank inlet must be at least 2 inches higher than
the outlet invert. -CORRECTANSWER True
Which type of distribution system is required on sloping ground? -CORRECTANSWER
Serial distribution
At what slope percentage are soil absorption systems prohibited? -CORRECTANSWER
More than 25%
True or False: Effluent from an upslope trench must flow to the downslope trench in
serial distribution. -CORRECTANSWER True
