Virginia (VA) Master Onsite Sewage
System Installer EXAM STUDY GUIDE
2026/2027 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
When is a construction permit required? - ANSWER A construction permit is
required when a sewage system is altered, extended, replaced, or constructed.
What is the minimum distance of the absorption system from the seasonal high-
water table? - ANSWER 24 inches
What is the minimum total depth of the aggregate in an absorption system? -
ANSWER 12 inches.
Should the header of the absorption system be level? - ANSWER True
How long is a construction permit valid? - ANSWER 24 months.
What are the isolation distances for septic tanks? - ANSWER Septic tanks must be
10 feet from foundation walls and building footing drains, 20 feet from steep
embankments, and 25 feet from storm drains and other subsoil drains.
, The absorption system aggregate bed must: - ANSWER Be level on top and at
least 2 inches above the drain tile
The line from the septic tank to the header: - ANSWER Must be connected to
doubleheaders if there are seven or more laterals
The laterals: - ANSWER Must be minimum 3 feet and maximum 4 feet apart on
center. May slope down a maximum 4 inches in 100 feet.
What must cover the stone aggregate before sand? - ANSWER filter fabric or
other approved material.
Ten Acre Exemption - ANSWER 200 Foot Setback from Boundaries Does not
apply to ADEQ requirements
Fine up ——- to permit under ———- acres. - ANSWER $ 1000 10acres
Rules and Regulations Pertaining to Onsite Wastewater System Found on ADH
Website - ANSWER www.healthy.arkansas.gov
When was the last revision of rules? - ANSWER August 2019
How much is annual License Fee? - ANSWER $100
License Expires - ANSWER December 31
License Renewable - ANSWER January 1
,——-% Late Fee After ———? - ANSWER 50 % , March 1
Delinquent for more than ———- requires retesting? - ANSWER one year
EHP - 19 - ANSWER Individual Onsite Wastewater System Application
THE APPROVED PERMIT must be completed by? - ANSWER Designated
Representative DR
What is the primary focus of the onsite sewage system materials course? -
ANSWER To provide a clear understanding of materials used in onsite wastewater
treatment and disposal systems.
What are some types of onsite sewage treatment receptacles? - ANSWER Septic
tanks, gray water tanks, laundry tanks, grease interceptors, dosing tanks, aerobic
treatment unit tanks, and stationary holding tanks.
What materials are commonly used to construct sewage treatment tanks? -
ANSWER Concrete, fiberglass, or polyethylene.
What is the minimum capacity for a grease interceptor connected to an on-site
sewage system in Florida? - ANSWER 750 gallons.
What is the maximum capacity for a grease interceptor in Florida? - ANSWER
1,250 gallons.
What happens to fats, oils, greases, and solids in a grease interceptor? - ANSWER
They separate from wastewater, with fats and oils floating and solids sinking.
, Why are grease interceptors not required for residential homes? - ANSWER They
are only required where sufficient amounts of grease are produced, typically in
food service establishments.
What is the purpose of a dosing tank in an onsite sewage system? - ANSWER To
distribute effluent to a drain field or other parts of the sewage treatment system.
What must be done to the electrical conduit in a dosing tank? - ANSWER It must
exit through a riser, not through a chipped part of the manhole cover.
What is the required effective capacity for the first chamber of a dual
compartment septic tank? - ANSWER At least two-thirds of the total required
effective capacity.
What is the minimum effective capacity for the second chamber of a dual
compartment septic tank? - ANSWER At least one-fifth of the total required
effective capacity.
What is the smallest allowable tank size in a repair situation? - ANSWER 600
gallons.
What standard must seals meet according to Florida regulations? - ANSWER
ASTMC 923-98, for resilient connectors between concrete structures and pipes.
When were outlet filters required on all single compartment tanks? - ANSWER
March 1, 1995.
What is the typical filtration slot size for residential outlet filters? - ANSWER
Between 1/8 inch to 1/16 inch.
System Installer EXAM STUDY GUIDE
2026/2027 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
When is a construction permit required? - ANSWER A construction permit is
required when a sewage system is altered, extended, replaced, or constructed.
What is the minimum distance of the absorption system from the seasonal high-
water table? - ANSWER 24 inches
What is the minimum total depth of the aggregate in an absorption system? -
ANSWER 12 inches.
Should the header of the absorption system be level? - ANSWER True
How long is a construction permit valid? - ANSWER 24 months.
What are the isolation distances for septic tanks? - ANSWER Septic tanks must be
10 feet from foundation walls and building footing drains, 20 feet from steep
embankments, and 25 feet from storm drains and other subsoil drains.
, The absorption system aggregate bed must: - ANSWER Be level on top and at
least 2 inches above the drain tile
The line from the septic tank to the header: - ANSWER Must be connected to
doubleheaders if there are seven or more laterals
The laterals: - ANSWER Must be minimum 3 feet and maximum 4 feet apart on
center. May slope down a maximum 4 inches in 100 feet.
What must cover the stone aggregate before sand? - ANSWER filter fabric or
other approved material.
Ten Acre Exemption - ANSWER 200 Foot Setback from Boundaries Does not
apply to ADEQ requirements
Fine up ——- to permit under ———- acres. - ANSWER $ 1000 10acres
Rules and Regulations Pertaining to Onsite Wastewater System Found on ADH
Website - ANSWER www.healthy.arkansas.gov
When was the last revision of rules? - ANSWER August 2019
How much is annual License Fee? - ANSWER $100
License Expires - ANSWER December 31
License Renewable - ANSWER January 1
,——-% Late Fee After ———? - ANSWER 50 % , March 1
Delinquent for more than ———- requires retesting? - ANSWER one year
EHP - 19 - ANSWER Individual Onsite Wastewater System Application
THE APPROVED PERMIT must be completed by? - ANSWER Designated
Representative DR
What is the primary focus of the onsite sewage system materials course? -
ANSWER To provide a clear understanding of materials used in onsite wastewater
treatment and disposal systems.
What are some types of onsite sewage treatment receptacles? - ANSWER Septic
tanks, gray water tanks, laundry tanks, grease interceptors, dosing tanks, aerobic
treatment unit tanks, and stationary holding tanks.
What materials are commonly used to construct sewage treatment tanks? -
ANSWER Concrete, fiberglass, or polyethylene.
What is the minimum capacity for a grease interceptor connected to an on-site
sewage system in Florida? - ANSWER 750 gallons.
What is the maximum capacity for a grease interceptor in Florida? - ANSWER
1,250 gallons.
What happens to fats, oils, greases, and solids in a grease interceptor? - ANSWER
They separate from wastewater, with fats and oils floating and solids sinking.
, Why are grease interceptors not required for residential homes? - ANSWER They
are only required where sufficient amounts of grease are produced, typically in
food service establishments.
What is the purpose of a dosing tank in an onsite sewage system? - ANSWER To
distribute effluent to a drain field or other parts of the sewage treatment system.
What must be done to the electrical conduit in a dosing tank? - ANSWER It must
exit through a riser, not through a chipped part of the manhole cover.
What is the required effective capacity for the first chamber of a dual
compartment septic tank? - ANSWER At least two-thirds of the total required
effective capacity.
What is the minimum effective capacity for the second chamber of a dual
compartment septic tank? - ANSWER At least one-fifth of the total required
effective capacity.
What is the smallest allowable tank size in a repair situation? - ANSWER 600
gallons.
What standard must seals meet according to Florida regulations? - ANSWER
ASTMC 923-98, for resilient connectors between concrete structures and pipes.
When were outlet filters required on all single compartment tanks? - ANSWER
March 1, 1995.
What is the typical filtration slot size for residential outlet filters? - ANSWER
Between 1/8 inch to 1/16 inch.
