South Carolina Septic Tank Installer License Exam, South
Carolina Department of Health and Environmental Control
(SCDHEC), Academic Year 2026-2027 Questions with Answers
Introduction
This exam contains 52 multiple-choice practice questions covering
septic tank components, drainfields, effluent and sludge, hydraulic
loading, soil evaluation, installation practices, pumping systems,
setbacks, and South Carolina regulatory requirements. An answer
key is provided for all 52 questions, including topics such as SCDHEC
requirements, distribution systems, soil conditions, construction
inspection, and septic system maintenance.
Exam Questions and Answers
, South Carolina Septic Tank Installer License Exam — 50
Questions
52 questions
Name: Date: Score:
1. What is a septic tank baffle designed to help do?
A Raise the groundwater table
B Increase household water use
C Replace the drainfield
D Control flow and reduce disturbance of settled and floating solids
2. What generally happens to heavier solids entering a septic tank?
A They float to the surface
B They settle to form sludge
C They pass immediately to the drainfield
D They evaporate
3. What is exfiltration from a septic system?
A Wastewater leaking out of the system into surrounding soil or groundwater
B Sludge settling in the tank
C Air entering a vent
D Groundwater entering the tank
Carolina Department of Health and Environmental Control
(SCDHEC), Academic Year 2026-2027 Questions with Answers
Introduction
This exam contains 52 multiple-choice practice questions covering
septic tank components, drainfields, effluent and sludge, hydraulic
loading, soil evaluation, installation practices, pumping systems,
setbacks, and South Carolina regulatory requirements. An answer
key is provided for all 52 questions, including topics such as SCDHEC
requirements, distribution systems, soil conditions, construction
inspection, and septic system maintenance.
Exam Questions and Answers
, South Carolina Septic Tank Installer License Exam — 50
Questions
52 questions
Name: Date: Score:
1. What is a septic tank baffle designed to help do?
A Raise the groundwater table
B Increase household water use
C Replace the drainfield
D Control flow and reduce disturbance of settled and floating solids
2. What generally happens to heavier solids entering a septic tank?
A They float to the surface
B They settle to form sludge
C They pass immediately to the drainfield
D They evaporate
3. What is exfiltration from a septic system?
A Wastewater leaking out of the system into surrounding soil or groundwater
B Sludge settling in the tank
C Air entering a vent
D Groundwater entering the tank
