SOUTH CAROLINA SEPTIC TANK CONTRACTOR
PRACTICE EXAM 300 MULTIPLECHOICE QUESTIONS
WITH ANSWERS AND RATIONALES
SECTION 1: REGULATORY FRAMEWORK (Questions 150)
Question 1
Which regulation is the principal SCDES regulation governing onsite wastewater
systems in South Carolina?
A) Regulation 6167
B) Regulation 6156
C) Regulation 441
D) Regulation 51
Correct Answer: B
Rationale: SCDES identifies Regulation 6156 as the Onsite Wastewater Systems
regulation, which is the primary governing document for septic system
installation, design, and maintenance in South Carolina .
,Question 2
What state agency is currently responsible for enforcing Regulation 6156 and
licensing septic tank contractors?
A) Department of Health and Environmental Control (DHEC)
B) Department of Environmental Services (SCDES)
C) Department of Labor, Licensing and Regulation (LLR)
D) Department of Natural Resources (DNR)
Correct Answer: B
Rationale: The South Carolina Department of Environmental Services (SCDES) is
the agency responsible for enforcing Regulation 6156 and licensing onsite
wastewater system professionals, having succeeded DHEC in this role .
Question 3
What is the minimum passing score required for the SCDES septic system installer
licensing examination?
A) 70%
B) 75%
C) 80%
D) 85%
,Correct Answer: C
Rationale: Applicants must score 80% or better to pass the SCDES septic system
installer licensing examination .
Question 4
After failing the examination the first time, how long must an applicant wait
before retaking it?
A) 15 days
B) 30 days
C) 45 days
D) 60 days
Correct Answer: B
Rationale: SCDES requires a 30calendarday waiting period following an
unsuccessful first examination attempt before the applicant may retest .
Question 5
If an applicant fails the examination a second time, what waiting period applies
before subsequent examinations?
, A) 30 days
B) 45 days
C) 60 days
D) 90 days
Correct Answer: C
Rationale: After a second failure, the applicant must wait 60 days before retaking
the exam. This applies to subsequent attempts as well .
Question 6
What is the annual continuing education requirement for a Tier 2 licensed installer
in South Carolina?
A) 6 hours every year
B) 12 hours every two years
C) 24 hours every two years
D) No continuing education required
Correct Answer: B
Rationale: SCDES requires 12 hours of Continuing Education Units (CEUs) every
two years for Tier 2 licensed installers .
PRACTICE EXAM 300 MULTIPLECHOICE QUESTIONS
WITH ANSWERS AND RATIONALES
SECTION 1: REGULATORY FRAMEWORK (Questions 150)
Question 1
Which regulation is the principal SCDES regulation governing onsite wastewater
systems in South Carolina?
A) Regulation 6167
B) Regulation 6156
C) Regulation 441
D) Regulation 51
Correct Answer: B
Rationale: SCDES identifies Regulation 6156 as the Onsite Wastewater Systems
regulation, which is the primary governing document for septic system
installation, design, and maintenance in South Carolina .
,Question 2
What state agency is currently responsible for enforcing Regulation 6156 and
licensing septic tank contractors?
A) Department of Health and Environmental Control (DHEC)
B) Department of Environmental Services (SCDES)
C) Department of Labor, Licensing and Regulation (LLR)
D) Department of Natural Resources (DNR)
Correct Answer: B
Rationale: The South Carolina Department of Environmental Services (SCDES) is
the agency responsible for enforcing Regulation 6156 and licensing onsite
wastewater system professionals, having succeeded DHEC in this role .
Question 3
What is the minimum passing score required for the SCDES septic system installer
licensing examination?
A) 70%
B) 75%
C) 80%
D) 85%
,Correct Answer: C
Rationale: Applicants must score 80% or better to pass the SCDES septic system
installer licensing examination .
Question 4
After failing the examination the first time, how long must an applicant wait
before retaking it?
A) 15 days
B) 30 days
C) 45 days
D) 60 days
Correct Answer: B
Rationale: SCDES requires a 30calendarday waiting period following an
unsuccessful first examination attempt before the applicant may retest .
Question 5
If an applicant fails the examination a second time, what waiting period applies
before subsequent examinations?
, A) 30 days
B) 45 days
C) 60 days
D) 90 days
Correct Answer: C
Rationale: After a second failure, the applicant must wait 60 days before retaking
the exam. This applies to subsequent attempts as well .
Question 6
What is the annual continuing education requirement for a Tier 2 licensed installer
in South Carolina?
A) 6 hours every year
B) 12 hours every two years
C) 24 hours every two years
D) No continuing education required
Correct Answer: B
Rationale: SCDES requires 12 hours of Continuing Education Units (CEUs) every
two years for Tier 2 licensed installers .
