EVITP PRACTICE TEST 2026 QUESTIONS WITH
ANSWERS GRADED A+
▶ The expected volume of wastewater (Q) in gal/day from an older (pre-
1990) three-bedroom mobile home would be? Answer:300
▶ Which of the following characteristics should a poured-in-place concrete
septic tanks have?? Answer:watertight, designed by PE, Structurally sound
▶ The standard inlet and outlet devices in a septic tank should be?
Answer:tees
▶ Properly sealed septic tanks are? Answer:vented through the building
plumbing
▶ The liquid depth of a septic tank? Answer:must be at least 30 inches
▶ Which of the following is true of a septic tank with 15 inches of cover??
Answer:it must have an access port with a riser
▶ Which if the following is acceptable for the line from the building to the
treatment tank?? Answer:cast iron, SDR 26 plastic pipe, and Schedule 40
plastic pipe
▶ Most of the settable solids and scum that enter a properly designed
septic tank will be? Answer:removed in the first compartment
▶ Which of the following should a house sewer have?? Answer:A two way
sanitary clean-out, minimum 1/8 inch per foot fall, minimum diameter of 3
inches
▶ Which of the following applies if effluent is to be pumped?? Answer:A
high-water alarm must be provided, the pump must be installed in a
separate chamber, a check valve should be in line if the disposal area is
upgrade
▶ T/F: Septic tanks may be 1.5 inch-thick steel? Answer:F
, ▶ T/F: Septic tanks may be reinforced fiberglass? Answer:T
▶ T/F: Two single-compartment septic tanks in series are allowed?
Answer:T
▶ How many spray heads would be needed for an older four bedroom
home without water-saving devices in Beaumont, Texas (note: extreme
southeast Texas) to meet minimum requirements for spray are is rotary
heads sent out a spray 30 feet?? Answer:4
▶ T/F: A two-compartment septic tank is allowed? Answer:T
▶ T/F: One single-compartment septic tank that is sized properly is
allowed.? Answer:F
▶ T/F: Tees are allowed for inlet and outlet devices? Answer:T
▶ T/F: An inlet line should be at least 3 inches above the liquid level.?
Answer:T
▶ T/F: A leakage from the tank or joints of 1.6 gallons/hour is permissible?
Answer:F
▶ T/F: A 12-inch port (minimum) must be provided in the top of the tank?
Answer:T
▶ T/F: The first compartment should be smaller than the second
compartment? Answer:F....Should be 1/2 to 2/3s the second
▶ T/F: Outlet Tee should extend to the bottom of the tank? Answer:F
▶ T/F: The tank must be level? Answer:T
▶ T/F: A minimum 4-inch-thick sand, sandy loam, clay loam, or pea gravel
pad is required under prefabricated tanks? Answer:T
▶ The standard drainfield depth in East and Central Texas is limited to?
Answer:18 inches minimum and 36 inches maximum
ANSWERS GRADED A+
▶ The expected volume of wastewater (Q) in gal/day from an older (pre-
1990) three-bedroom mobile home would be? Answer:300
▶ Which of the following characteristics should a poured-in-place concrete
septic tanks have?? Answer:watertight, designed by PE, Structurally sound
▶ The standard inlet and outlet devices in a septic tank should be?
Answer:tees
▶ Properly sealed septic tanks are? Answer:vented through the building
plumbing
▶ The liquid depth of a septic tank? Answer:must be at least 30 inches
▶ Which of the following is true of a septic tank with 15 inches of cover??
Answer:it must have an access port with a riser
▶ Which if the following is acceptable for the line from the building to the
treatment tank?? Answer:cast iron, SDR 26 plastic pipe, and Schedule 40
plastic pipe
▶ Most of the settable solids and scum that enter a properly designed
septic tank will be? Answer:removed in the first compartment
▶ Which of the following should a house sewer have?? Answer:A two way
sanitary clean-out, minimum 1/8 inch per foot fall, minimum diameter of 3
inches
▶ Which of the following applies if effluent is to be pumped?? Answer:A
high-water alarm must be provided, the pump must be installed in a
separate chamber, a check valve should be in line if the disposal area is
upgrade
▶ T/F: Septic tanks may be 1.5 inch-thick steel? Answer:F
, ▶ T/F: Septic tanks may be reinforced fiberglass? Answer:T
▶ T/F: Two single-compartment septic tanks in series are allowed?
Answer:T
▶ How many spray heads would be needed for an older four bedroom
home without water-saving devices in Beaumont, Texas (note: extreme
southeast Texas) to meet minimum requirements for spray are is rotary
heads sent out a spray 30 feet?? Answer:4
▶ T/F: A two-compartment septic tank is allowed? Answer:T
▶ T/F: One single-compartment septic tank that is sized properly is
allowed.? Answer:F
▶ T/F: Tees are allowed for inlet and outlet devices? Answer:T
▶ T/F: An inlet line should be at least 3 inches above the liquid level.?
Answer:T
▶ T/F: A leakage from the tank or joints of 1.6 gallons/hour is permissible?
Answer:F
▶ T/F: A 12-inch port (minimum) must be provided in the top of the tank?
Answer:T
▶ T/F: The first compartment should be smaller than the second
compartment? Answer:F....Should be 1/2 to 2/3s the second
▶ T/F: Outlet Tee should extend to the bottom of the tank? Answer:F
▶ T/F: The tank must be level? Answer:T
▶ T/F: A minimum 4-inch-thick sand, sandy loam, clay loam, or pea gravel
pad is required under prefabricated tanks? Answer:T
▶ The standard drainfield depth in East and Central Texas is limited to?
Answer:18 inches minimum and 36 inches maximum
