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Free Practice Questions for NM Journeyman Plumber

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Key Facts: NM Journeyman Plumber Exam

70%

Passing Score

NM CID

80-100

Questions

PSI exam

~$210

Exam Fee

PSI

UPC-based

Code

NM Plumbing Code

The NM journeyman plumber exam has 80-100 questions with a 3-hour time limit requiring 70% to pass. New Mexico uses a plumbing code based on the UPC with state amendments. The exam is administered by PSI and costs approximately $210.

Sample NM Journeyman Plumber Practice Questions

Try these sample questions to review concepts for the NM Journeyman Plumber exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 298+ question experience with AI tutoring.

1Under the UPC adopted by New Mexico, what is the minimum slope for a 4-inch horizontal drain?
A.1/16 inch per foot
B.1/8 inch per foot
C.1/4 inch per foot
D.1/2 inch per foot
Explanation: Under the UPC, 4-inch and larger drains require 1/8 inch per foot minimum slope. Pipes 3 inches and smaller require 1/4 inch per foot. New Mexico enforces UPC standards via NM Construction Industries Division (PSI).
2Under the UPC, what is the DFU value for a standard water closet?
A.2 DFU
B.3 DFU
C.4 DFU
D.6 DFU
Explanation: Under the UPC, a standard water closet is 4 DFU. New Mexico plumbers use UPC DFU values.
3Under the UPC, minimum building sewer with water closets is?
A.2 inches
B.3 inches
C.4 inches
D.6 inches
Explanation: Minimum building sewer is 4 inches when water closets are connected. New Mexico follows UPC sewer sizing.
4Under the UPC, minimum vent pipe size is?
A.1 inch
B.1-1/4 inches
C.1-1/2 inches
D.2 inches
Explanation: No vent less than 1-1/4 inches under the UPC. New Mexico follows UPC vent sizing.
5Under the UPC, max static water pressure in a building is?
A.60 psi
B.80 psi
C.100 psi
D.120 psi
Explanation: Max static pressure is 80 psi. PRV required above 80. New Mexico follows UPC pressure limits.
6Under the UPC, high-hazard cross-connections require what backflow device?
A.AVB
B.Dual check
C.RPZ assembly
D.Hose bibb vacuum breaker
Explanation: RPZ required for high-hazard cross-connections. New Mexico plumbers select devices by hazard level.
7Under the UPC, minimum trap seal depth is?
A.1 inch
B.2 inches
C.3 inches
D.4 inches
Explanation: Minimum trap seal is 2 inches, maximum 4 inches. New Mexico plumbers maintain proper seals.
8Under the UPC, minimum lavatory trap size is?
A.1 inch
B.1-1/4 inches
C.1-1/2 inches
D.2 inches
Explanation: Minimum lavatory trap is 1-1/4 inches. New Mexico follows UPC trap sizing.
9Under the UPC, minimum building water service is?
A.1/2 inch
B.3/4 inch
C.1 inch
D.1-1/4 inches
Explanation: Minimum building water service is 3/4 inch. New Mexico plumbers size per UPC calculations.
10Under the UPC, what material is NOT approved for underground drainage?
A.Cast iron
B.PVC DWV
C.ABS DWV
D.Galvanized steel
Explanation: Galvanized steel corrodes underground. Cast iron, PVC, ABS are approved. New Mexico follows UPC material rules.

About the NM Journeyman Plumber Exam

New Mexico's journeyman plumber exam is administered by PSI on behalf of the Construction Industries Division. The NM Plumbing Code is based on the UPC with state amendments. The exam covers 80-100 questions with a 3-hour time limit and requires 70% to pass.

Exam sponsor: NM Construction Industries Division (PSI). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

90 questions

Time Limit

3 hours

Passing Score

70%

Exam / Certification Fees

~$210

Exam sponsor website

Reported exam pass rate: ~55%. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25%

Drainage, Waste & Vent Systems

NM plumbing code drainage pipe sizing, DFU calculations, slope requirements, cleanouts, and trap arm distances

20%

Venting Systems

Vent sizing, wet venting, AAVs, vent termination, and combination waste and vent per NM code

20%

Water Supply & Backflow Prevention

Water pipe sizing, WSFU calculations, backflow prevention, pressure regulation, and cross-connection control

15%

Gas Piping & Venting

Gas pipe sizing, BTUH calculations, pressure testing, combustion air, and appliance venting

20%

Fixtures, Materials & Code Administration

Fixture installation, clearances, materials, permits, inspections, and NM-specific amendments

Preparing for the NM Journeyman Plumber Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 90 questions
  • Time limit: 3 hours
  • Exam / certification fees: ~$210 Official sources

Using Our Practice Resources

  • Work through all 298 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NM Journeyman Plumber: Suggested Study Strategy

1Study UPC-based content — NM's plumbing code is based on the UPC with state amendments
2Learn DFU values and drainage pipe sizing per UPC tables
3Master backflow prevention device selection for different hazard levels
4Study gas pipe sizing and BTUH calculations
5Review NM-specific amendments to the UPC, especially water conservation measures
6Practice with timed exams to manage the 3-hour time limit effectively

Frequently Asked Questions

What plumbing code does New Mexico use?

New Mexico uses the NM Plumbing Code, which is based on the Uniform Plumbing Code (UPC) with state-specific amendments. Study materials based on the UPC are applicable, with attention to NM amendments.

How many questions are on the NM plumber exam?

The NM journeyman plumber exam has approximately 80-100 questions with a 3-hour time limit. A 70% score is required to pass. The exam is administered by PSI.

How much does the NM plumber exam cost?

The NM journeyman plumber exam costs approximately $210. This covers the PSI exam fee. Additional license fees may apply through the Construction Industries Division.

Does NM have unique plumbing requirements?

Yes, New Mexico has state amendments to the UPC that address arid climate conditions, water conservation, and local construction practices. High altitude areas may also have specific requirements.