ARIZONA R-41 / CR-41 SEPTIC TANKS & SYSTEMS
CONTRACTOR EXAM 200 Practice Questions with
Verified Answers & Detailed Rationales
University/Issuing Body: Arizona Registrar of Contractors (ROC) — PSI Testing Services
Course/Exam: R-41 / CR-41 Septic Tanks & Systems Contractor License Exam
Professor/Examiner: Arizona Registrar of Contractors Board & Arizona Department of
Environmental Quality (ADEQ)
Exam Format: Open Book | 100 Questions (Actual) / 200 Questions (Practice) | 240 Minutes |
70% Passing Score
Prerequisite: 4 Years of Documented, Hands-On Experience in Onsite Wastewater Systems
Reference Materials:
- Arizona Administrative Code (A.A.C.) Title 18, Chapter 9 — Onsite Wastewater Treatment
Facilities
- ADEQ R18-9 Rules — System Design, Permitting, and Inspection Requirements
- EPA Onsite Wastewater Treatment Systems Manual
- OSHA 29 CFR Part 1926 — Safety Standards
- Arizona Registrar of Contractors (ROC) Rules and Statutes
- Local County Health Department Regulations (Permitting Authority Delegated to Counties)
📚 TABLE OF CONTENTS
| Section | Topic | Questions |
||-|--|
| 1 | Arizona Regulations, Licensing & Permitting | 1–30 |
| 2 | Septic Tank Design, Components & Materials | 31–60 |
| 3 | Drainfield / Leach Field Systems | 61–80 |
| 4 | Soil Science, Percolation Testing & Site Evaluation | 81–100 |
| 5 | Alternative Treatment Systems | 101–120 |
| 6 | System Sizing & Hydraulic Design | 121–135 |
| 7 | Maintenance, Inspection & Troubleshooting | 136–155 |
| 8 | Safety, Excavation & Confined Space Entry | 156–175 |
| 9 | Setbacks, Separation Distances & Siting | 176–190 |
,| 10 | Business, Contracts & ROC Rules | 191–200 |
SECTION 1: ARIZONA REGULATIONS, LICENSING & PERMITTING
Questions 1–30
QUESTION 1
What is the primary state agency responsible for regulating septic systems and setting
environmental rules in Arizona?
A) Arizona Department of Health Services (ADHS)
B) Arizona Department of Environmental Quality (ADEQ)
C) Arizona Registrar of Contractors (ROC)
D) Arizona Corporation Commission
Correct Answer: B — Arizona Department of Environmental Quality (ADEQ)
Rationale: ADEQ is the primary state agency that sets rules and licensing requirements for
septic systems in Arizona. ADEQ has delegated permitting authority to each of the 15 counties.
QUESTION 2
Which Arizona agency issues the contractor license required to install or repair septic systems
under the CR-41 scope of work?
A) Arizona Department of Environmental Quality (ADEQ)
B) Arizona Registrar of Contractors (ROC)
C) Local County Health Department
D) Arizona Department of Water Resources
Correct Answer: B — Arizona Registrar of Contractors (ROC)
Rationale: The ROC is the state agency that grants and regulates contractor licenses, including
the CR-41 license for onsite wastewater treatment work. ADEQ issues environmental permits,
while ROC licenses the contractor.
QUESTION 3
What is the minimum age requirement to apply for an Arizona CR-41 Septic Tank Contractor
license?
,A) 16 years
B) 18 years
C) 21 years
D) 25 years
Correct Answer: B — 18 years
Rationale: Arizona licensing rules require applicants to be at least 18 years of age to ensure
legal contract capability.
QUESTION 4
What type of financial responsibility must a CR-41 licensee in Arizona maintain?
A) None
B) Surety bond only
C) Surety bond or insurance
D) Personal savings account
Correct Answer: C — Surety bond or insurance
Rationale: To protect consumers, Arizona requires septic contractors to maintain financial
responsibility through a surety bond or insurance coverage.
QUESTION 5
How many hours of continuing education are required for CR-41 license renewal in Arizona?
A) 0 hours
B) 4 hours
C) 8 hours
D) 16 hours
Correct Answer: C — 8 hours
Rationale: Arizona requires 8 hours of approved continuing education to ensure contractors
remain current with industry standards and regulatory changes.
QUESTION 6
Which Arizona administrative code outlines the requirements for CR-41 Septic Tank Contractor
licensing and onsite wastewater treatment?
A) Arizona Revised Statutes Title 32
, B) Arizona Administrative Code Title 18, Chapter 9
C) Arizona Administrative Code Title 12, Chapter 5
D) Arizona Revised Statutes Title 28
Correct Answer: B — Arizona Administrative Code Title 18, Chapter 9
Rationale: A.A.C. Title 18, Chapter 9 is the governing document for onsite wastewater treatment
facilities in Arizona.
QUESTION 7
Which agency has been delegated the authority to issue permits for septic systems in Arizona?
A) Only the Arizona Department of Environmental Quality
B) Each of the 15 counties
C) The Arizona Registrar of Contractors
D) The Environmental Protection Agency (EPA)
Correct Answer: B — Each of the 15 counties
Rationale: ADEQ sets the rules and has delegated permitting authority to each of the 15
counties in Arizona.
QUESTION 8
What is the primary role of the Arizona Registrar of Contractors (ROC) regarding septic system
contractors?
A) Enforcing environmental regulations
B) Licensing and regulating contractors who install or repair septic systems
C) Issuing environmental permits
D) Conducting soil percolation tests
Correct Answer: B — Licensing and regulating contractors who install or repair septic systems
Rationale: The ROC licenses contractors and ensures they meet the qualifications to perform
septic system work, while ADEQ handles environmental permitting.
QUESTION 9
The CR-41 scope of work explicitly includes all of the following EXCEPT:
A) Excavation for septic tank placement
B) Installation of a water well
CONTRACTOR EXAM 200 Practice Questions with
Verified Answers & Detailed Rationales
University/Issuing Body: Arizona Registrar of Contractors (ROC) — PSI Testing Services
Course/Exam: R-41 / CR-41 Septic Tanks & Systems Contractor License Exam
Professor/Examiner: Arizona Registrar of Contractors Board & Arizona Department of
Environmental Quality (ADEQ)
Exam Format: Open Book | 100 Questions (Actual) / 200 Questions (Practice) | 240 Minutes |
70% Passing Score
Prerequisite: 4 Years of Documented, Hands-On Experience in Onsite Wastewater Systems
Reference Materials:
- Arizona Administrative Code (A.A.C.) Title 18, Chapter 9 — Onsite Wastewater Treatment
Facilities
- ADEQ R18-9 Rules — System Design, Permitting, and Inspection Requirements
- EPA Onsite Wastewater Treatment Systems Manual
- OSHA 29 CFR Part 1926 — Safety Standards
- Arizona Registrar of Contractors (ROC) Rules and Statutes
- Local County Health Department Regulations (Permitting Authority Delegated to Counties)
📚 TABLE OF CONTENTS
| Section | Topic | Questions |
||-|--|
| 1 | Arizona Regulations, Licensing & Permitting | 1–30 |
| 2 | Septic Tank Design, Components & Materials | 31–60 |
| 3 | Drainfield / Leach Field Systems | 61–80 |
| 4 | Soil Science, Percolation Testing & Site Evaluation | 81–100 |
| 5 | Alternative Treatment Systems | 101–120 |
| 6 | System Sizing & Hydraulic Design | 121–135 |
| 7 | Maintenance, Inspection & Troubleshooting | 136–155 |
| 8 | Safety, Excavation & Confined Space Entry | 156–175 |
| 9 | Setbacks, Separation Distances & Siting | 176–190 |
,| 10 | Business, Contracts & ROC Rules | 191–200 |
SECTION 1: ARIZONA REGULATIONS, LICENSING & PERMITTING
Questions 1–30
QUESTION 1
What is the primary state agency responsible for regulating septic systems and setting
environmental rules in Arizona?
A) Arizona Department of Health Services (ADHS)
B) Arizona Department of Environmental Quality (ADEQ)
C) Arizona Registrar of Contractors (ROC)
D) Arizona Corporation Commission
Correct Answer: B — Arizona Department of Environmental Quality (ADEQ)
Rationale: ADEQ is the primary state agency that sets rules and licensing requirements for
septic systems in Arizona. ADEQ has delegated permitting authority to each of the 15 counties.
QUESTION 2
Which Arizona agency issues the contractor license required to install or repair septic systems
under the CR-41 scope of work?
A) Arizona Department of Environmental Quality (ADEQ)
B) Arizona Registrar of Contractors (ROC)
C) Local County Health Department
D) Arizona Department of Water Resources
Correct Answer: B — Arizona Registrar of Contractors (ROC)
Rationale: The ROC is the state agency that grants and regulates contractor licenses, including
the CR-41 license for onsite wastewater treatment work. ADEQ issues environmental permits,
while ROC licenses the contractor.
QUESTION 3
What is the minimum age requirement to apply for an Arizona CR-41 Septic Tank Contractor
license?
,A) 16 years
B) 18 years
C) 21 years
D) 25 years
Correct Answer: B — 18 years
Rationale: Arizona licensing rules require applicants to be at least 18 years of age to ensure
legal contract capability.
QUESTION 4
What type of financial responsibility must a CR-41 licensee in Arizona maintain?
A) None
B) Surety bond only
C) Surety bond or insurance
D) Personal savings account
Correct Answer: C — Surety bond or insurance
Rationale: To protect consumers, Arizona requires septic contractors to maintain financial
responsibility through a surety bond or insurance coverage.
QUESTION 5
How many hours of continuing education are required for CR-41 license renewal in Arizona?
A) 0 hours
B) 4 hours
C) 8 hours
D) 16 hours
Correct Answer: C — 8 hours
Rationale: Arizona requires 8 hours of approved continuing education to ensure contractors
remain current with industry standards and regulatory changes.
QUESTION 6
Which Arizona administrative code outlines the requirements for CR-41 Septic Tank Contractor
licensing and onsite wastewater treatment?
A) Arizona Revised Statutes Title 32
, B) Arizona Administrative Code Title 18, Chapter 9
C) Arizona Administrative Code Title 12, Chapter 5
D) Arizona Revised Statutes Title 28
Correct Answer: B — Arizona Administrative Code Title 18, Chapter 9
Rationale: A.A.C. Title 18, Chapter 9 is the governing document for onsite wastewater treatment
facilities in Arizona.
QUESTION 7
Which agency has been delegated the authority to issue permits for septic systems in Arizona?
A) Only the Arizona Department of Environmental Quality
B) Each of the 15 counties
C) The Arizona Registrar of Contractors
D) The Environmental Protection Agency (EPA)
Correct Answer: B — Each of the 15 counties
Rationale: ADEQ sets the rules and has delegated permitting authority to each of the 15
counties in Arizona.
QUESTION 8
What is the primary role of the Arizona Registrar of Contractors (ROC) regarding septic system
contractors?
A) Enforcing environmental regulations
B) Licensing and regulating contractors who install or repair septic systems
C) Issuing environmental permits
D) Conducting soil percolation tests
Correct Answer: B — Licensing and regulating contractors who install or repair septic systems
Rationale: The ROC licenses contractors and ensures they meet the qualifications to perform
septic system work, while ADEQ handles environmental permitting.
QUESTION 9
The CR-41 scope of work explicitly includes all of the following EXCEPT:
A) Excavation for septic tank placement
B) Installation of a water well
