AZ C-37 (CR-37) Plumbing Contractor
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
Pdf
SECTION 1: PLUMBING CODES, LICENSING & REGULATIONS
(Questions 1–10)
1. What is the primary plumbing code adopted by the State of
Arizona?
• A) International Plumbing Code (IPC)
• B) Uniform Plumbing Code (UPC)
• C) National Standard Plumbing Code (NSPC)
• D) Arizona State Plumbing Code (ASPC)
Correct Answer: B
Rationale: Arizona has historically adopted and amended the Uniform
Plumbing Code (UPC), published by the International Association of
Plumbing and Mechanical Officials (IAPMO).
2. Which state agency is primarily responsible for licensing plumbing
contractors in Arizona?
• A) Arizona Department of Environmental Quality (ADEQ)
• B) Arizona Department of Health Services (ADHS)
, • C) Arizona Registrar of Contractors (ROC)
• D) Arizona State Board of Technical Registration
Correct Answer: C
Rationale: The Arizona Registrar of Contractors (ROC) licenses plumbing
contractors and enforces statutes and rules related to plumbing work.
3. What is the minimum passing score for the Arizona plumbing
contractor (C-37) licensing exam?
• A) 60%
• B) 70%
• C) 75%
• D) 80%
Correct Answer: B
Rationale: According to the Arizona Registrar of Contractors, the minimum
passing score for plumbing exams is 70%.
4. A plumbing "journeyman" (CR-37) in Arizona is allowed to:
• A) Pull permits and contract directly with owners
• B) Perform plumbing work under the supervision of a licensed C-37
plumbing contractor
• C) Design plumbing systems for commercial buildings independently
• D) Work without any supervision
Correct Answer: B
Rationale: A journeyman (CR-37) can perform plumbing work but must be
employed by and under the supervision of a licensed C-37 plumbing
contractor, who holds the license to contract and pull permits.
5. Who is legally allowed to pull a plumbing permit in Arizona?
, • A) The property owner for their own residence (owner-builder)
• B) A licensed plumbing contractor (C-37)
• C) A journeyman plumber (CR-37)
• D) Any licensed general contractor
Correct Answer: B
Rationale: Only the licensed plumbing contractor of record, or sometimes
the property owner for their own primary residence (owner-builder), can
pull a plumbing permit. A journeyman cannot pull permits.
6. A C-37 license permits work on which of the following?
• A) Residential only
• B) Commercial only
• C) Both commercial and residential (dual)
• D) Industrial only
Correct Answer: B
Rationale: C-37 is the commercial plumbing license. CR-37 is the dual
(commercial-residential) license.
7. The CR-37 license classification allows:
• A) Only residential plumbing work
• B) Only commercial plumbing work
• C) Both commercial and residential plumbing work (dual
classification)
• D) Only new construction plumbing
Correct Answer: C
Rationale: The CR-37 (dual) license authorizes both residential and
commercial plumbing work under the dual classification.
, 8. In Arizona, a C-37 Plumbing Contractor's license allows the licensee
to:
• A) Perform architectural design of plumbing systems
• B) Install, repair, and alter plumbing within property lines
• C) Practice engineering without a license
• D) Install medical gas systems without certification
Correct Answer: B
Rationale: The C-37 classification allows installation, alteration, and repair
of all plumbing when performed solely within property lines and not on
public easements or right-of-ways.
9. The scope of work for a CR-37 Plumbing Contractor includes all of
the following EXCEPT:
• A) Water supply systems
• B) Drainage and venting
• C) Gas piping
• D) Structural engineering design
Correct Answer: D
Rationale: The CR-37 scope encompasses water supply, drainage, venting,
gas piping, hydronics, and water-related fire sprinkler systems. Structural
engineering design is outside the plumbing scope.
10. According to Arizona law, a plumbing permit is generally required
when:
• A) Replacing a faucet
• B) Clearing a drain
• C) Installing new plumbing systems
• D) Adjusting water pressure
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
SECTION 1: PLUMBING CODES, LICENSING & REGULATIONS
(Questions 1–10)
1. What is the primary plumbing code adopted by the State of
Arizona?
• A) International Plumbing Code (IPC)
• B) Uniform Plumbing Code (UPC)
• C) National Standard Plumbing Code (NSPC)
• D) Arizona State Plumbing Code (ASPC)
Correct Answer: B
Rationale: Arizona has historically adopted and amended the Uniform
Plumbing Code (UPC), published by the International Association of
Plumbing and Mechanical Officials (IAPMO).
2. Which state agency is primarily responsible for licensing plumbing
contractors in Arizona?
• A) Arizona Department of Environmental Quality (ADEQ)
• B) Arizona Department of Health Services (ADHS)
, • C) Arizona Registrar of Contractors (ROC)
• D) Arizona State Board of Technical Registration
Correct Answer: C
Rationale: The Arizona Registrar of Contractors (ROC) licenses plumbing
contractors and enforces statutes and rules related to plumbing work.
3. What is the minimum passing score for the Arizona plumbing
contractor (C-37) licensing exam?
• A) 60%
• B) 70%
• C) 75%
• D) 80%
Correct Answer: B
Rationale: According to the Arizona Registrar of Contractors, the minimum
passing score for plumbing exams is 70%.
4. A plumbing "journeyman" (CR-37) in Arizona is allowed to:
• A) Pull permits and contract directly with owners
• B) Perform plumbing work under the supervision of a licensed C-37
plumbing contractor
• C) Design plumbing systems for commercial buildings independently
• D) Work without any supervision
Correct Answer: B
Rationale: A journeyman (CR-37) can perform plumbing work but must be
employed by and under the supervision of a licensed C-37 plumbing
contractor, who holds the license to contract and pull permits.
5. Who is legally allowed to pull a plumbing permit in Arizona?
, • A) The property owner for their own residence (owner-builder)
• B) A licensed plumbing contractor (C-37)
• C) A journeyman plumber (CR-37)
• D) Any licensed general contractor
Correct Answer: B
Rationale: Only the licensed plumbing contractor of record, or sometimes
the property owner for their own primary residence (owner-builder), can
pull a plumbing permit. A journeyman cannot pull permits.
6. A C-37 license permits work on which of the following?
• A) Residential only
• B) Commercial only
• C) Both commercial and residential (dual)
• D) Industrial only
Correct Answer: B
Rationale: C-37 is the commercial plumbing license. CR-37 is the dual
(commercial-residential) license.
7. The CR-37 license classification allows:
• A) Only residential plumbing work
• B) Only commercial plumbing work
• C) Both commercial and residential plumbing work (dual
classification)
• D) Only new construction plumbing
Correct Answer: C
Rationale: The CR-37 (dual) license authorizes both residential and
commercial plumbing work under the dual classification.
, 8. In Arizona, a C-37 Plumbing Contractor's license allows the licensee
to:
• A) Perform architectural design of plumbing systems
• B) Install, repair, and alter plumbing within property lines
• C) Practice engineering without a license
• D) Install medical gas systems without certification
Correct Answer: B
Rationale: The C-37 classification allows installation, alteration, and repair
of all plumbing when performed solely within property lines and not on
public easements or right-of-ways.
9. The scope of work for a CR-37 Plumbing Contractor includes all of
the following EXCEPT:
• A) Water supply systems
• B) Drainage and venting
• C) Gas piping
• D) Structural engineering design
Correct Answer: D
Rationale: The CR-37 scope encompasses water supply, drainage, venting,
gas piping, hydronics, and water-related fire sprinkler systems. Structural
engineering design is outside the plumbing scope.
10. According to Arizona law, a plumbing permit is generally required
when:
• A) Replacing a faucet
• B) Clearing a drain
• C) Installing new plumbing systems
• D) Adjusting water pressure
