Current Colorado PSI format: the Journeyworker Plumber exam has 100 scored questions, 240 minutes, and a 70% or 70-correct passing requirement. PSI may add up to 10 unscored questions with up to 30 additional minutes. The official Colorado term is Journeyworker Plumber, formerly Journeyman Plumber.
What Is the Colorado Journeyman or Journeyworker Plumber Exam?
Colorado officially uses Journeyworker Plumber for the current license and exam. Journeyman Plumber remains a common search phrase and refers to the same licensing level.
Short answer: the current PSI exam contains 100 scored questions, allows 240 minutes, and requires 70 correct scored answers. PSI supplies the exam-room code references, and the current detailed reference list transitions from the 2021 IPC and IRC to the 2024 editions on November 1, 2026.
The exam heavily weights sanitary drainage, vents, water supply, and storm drainage. Those four areas account for 63 scored questions, making them the center of a smart plumbing exam prep plan.
This guide combines current PSI testing information, the 6,800-hour experience requirement, Colorado licensing rules, plumbing contractor distinctions, code-cycle changes, calculations, isometric practice, and structured contractor exam prep without pricing.
Colorado Journeyworker Plumber Exam Domains
Match your plumbing exam prep time to the official 100-question scored PSI outline.
| PSI Exam Area | What It Covers | Scored Questions |
|---|---|---|
| Sanitary Drainage Systems | Drainage fixture units, pipe sizing, slope, cleanouts, building drains, building sewers, materials and testing | 20 |
| Vents | Vent sizing, developed length, wet venting, circuit venting, common vents, trap arms and terminals | 18 |
| Water Supply | Fixture units, developed length, pressure, distribution sizing, materials, valves and backflow | 15 |
| Storm Drainage Systems | Roof drainage, rainfall, conductors, horizontal storm piping, secondary drainage and scuppers | 10 |
| Fixtures and Equipment | Installation, clearances, minimum fixture requirements, equipment and code-defined rules | 8 |
| Water Heaters / Other Systems | Water heaters, regulations, traps, indirect waste, isometrics and residential fire sprinklers | 29 combined |
Sanitary Drainage, Vents, Water Supply, and Storm Drainage account for 63 of the 100 scored questions.
Research Authority and Verification Snapshot
The strongest Colorado Journeyworker claims were checked against current PSI, Colorado statutes, Board rules, DORA material, and current 1 Exam Prep course data.
| Verified Point | Authority Count | Controlling Source |
|---|---|---|
| 100 scored questions / 240 minutes / 70 correct | 8+ reviewed confirmations | PSI Candidate Information Bulletin |
| Up to 10 unscored items with additional time | 6+ reviewed confirmations | PSI Candidate Information Bulletin |
| PSI supplies IPC and IRC test references | 5+ reviewed confirmations | PSI Reference List |
| 2021 IPC/IRC transitions to 2024 on November 1, 2026 | 4+ current confirmations | PSI September 2026 bulletin |
| Exam not based on Colorado state amendments | 3+ current confirmations | PSI Reference List |
| Journeyworker experience requirement is 6,800 hours | 7+ reviewed confirmations | Colorado statute and Board Rule 1.4 |
| Official name changed from Journeyman to Journeyworker | 3+ primary confirmations | PSI and current Colorado licensing terminology |
| Plumbing contractor requires responsible Master Plumber | 3+ primary confirmations | Colorado statute and Board rules |
About impressions: private Google Search Console impressions are not public. The authority count above means independent confirmations reviewed during research, not invented traffic, backlinks, Domain Authority, or ranking metrics.
Colorado Journeyworker Plumber Exam Breakdown
The licensing path combines PSI testing, practical-experience documentation, Colorado Board rules, and separate plumbing contractor requirements for businesses.
Journeyworker Exam100 scored questions | 240 minutes | 70 correct to pass
Possible Pretest ItemsUp to 10 unscored questions with up to 30 extra minutes
Testing ProviderPSI
Licensing AuthorityColorado State Plumbing Board / DORA
Official License NameJourneyworker Plumber
Current Detailed Reference List2021 IPC and 2021 IRC through October 2026
Next Code Cycle2024 IPC and IRC beginning November 1, 2026
Experience Requirement6,800 hours of practical plumbing experience
Exam-Room ReferencesIPC and IRC supplied by PSI
Practice like the real PSI exam. Your study system should not depend on personal tabs because PSI supplies the code books used in the testing room.
Know the code structure. Practice chapter, section, table, definition, and index navigation.
Memorize common formulas. PSI says plumbing theory formulas are not supplied at the testing center.
Prioritize the heavy domains. Drainage, Vents, and Water Supply account for 53 scored questions.
Journeyworker Plumbing Isometrics, Calculations and Clean-Code Navigation
The Colorado Journeyworker exam rewards candidates who can identify the plumbing system, choose the right IPC or IRC section, complete the calculation, and read isometric layouts under time pressure.
Simplified study illustration for drainage, vent, sizing, and isometric-analysis practice.
Train each practice question as a system-analysis sequence: identify the pipe or fixture, determine whether the problem is drainage, vent, water, storm, trap, or special waste, find the governing section or table, complete the math, and confirm the answer.
- Sanitary Drainage: 20 scored questions.
- Vents: 18 scored questions.
- Water Supply: 15 scored questions.
- Storm Drainage: 10 scored questions.
- Isometric Analysis: 5 scored questions.
| Skill | What to Practice | Common Mistake |
|---|---|---|
| Clean-code navigation | Chapter recognition, index terms, sections, tables, definitions and exceptions | Depending on personal tabs that will not be in the test-center references |
| Drainage sizing | Fixture units, horizontal and vertical sizing, slope, cleanouts and building sewers | Starting math before identifying the correct code table |
| Vent systems | Vent sizing, wet venting, circuit venting, trap arms and terminals | Treating every vent question as an individual-vent question |
| Water supply | Fixture units, pressure, developed length, backflow and pipe sizing | Using the wrong demand or sizing method |
| Isometric analysis | Direction, elevation, fixture-unit counts, pipe sizing and system compliance | Losing track of system direction or vent relationships |
| Time management | Timed blocks, flag-return strategy and 240-minute stamina | Spending too long on one calculation or code search |
Practice the path, not only the answer. After every missed exam-prep question, record the plumbing topic, code chapter, section or table, formula, and reason the original answer failed.
Your Colorado Journeyworker Plumber Licensing Roadmap
Seven steps take you from exam planning to PSI testing and Colorado licensing follow-through.
1
Confirm the license level
Use Journeyworker on official Colorado licensing documents and recognize Journeyman as the common search term for the same license level.
2
Confirm your experience
Prepare documentation for the current 6,800-hour practical plumbing experience requirement.
3
Confirm the PSI code cycle
Determine whether your test date uses the 2021 IPC/IRC or the 2024 editions under the November 1, 2026 transition.
4
Prepare with Colorado plumber exam prep
Study the PSI topic weights, practice clean-code navigation, memorize formulas, and build isometric-analysis skill.
5
Complete full-length practice
Run 100-question contractor exam prep sessions under the 240-minute scored-test limit and repair weak categories.
6
Take the PSI Journeyworker exam
Use the PSI-supplied code books, apply your clean-code navigation habits, and manage calculations under the official time limit.
7
Submit the Colorado license application
After passing, follow the current DORA process, document the required practical experience, and complete the remaining licensing requirements.
What Is on the Colorado Journeyworker Plumber Exam?
Study according to the current 100-question scored outline. The bars show each category relative to the largest subject.
Sanitary Drainage Systems20 questions
Vents18 questions
Water Supply15 questions
Storm Drainage Systems10 questions
Fixtures and Equipment8 questions
Water Heaters7 questions
General Regulations5 questions
Traps, Interceptors, and Separators5 questions
Indirect and Special Waste Piping5 questions
Isometric Analysis5 questions
Residential Fire Sprinklers2 questions
| High-Value Topic | Questions | Study Focus |
|---|---|---|
| Sanitary Drainage | 20 | Fixture units, pipe sizing, slope, cleanouts, building drains, building sewers and code tables |
| Vents | 18 | Sizing, wet venting, circuit venting, trap arms, terminals and prohibited arrangements |
| Water Supply | 15 | Pressure, fixture units, pipe sizing, developed length, backflow and distribution |
| Storm Drainage | 10 | Roof drainage, rainfall, conductors, scuppers and storm-pipe sizing |
| Fixtures and Equipment | 8 | Clearances, installation, minimums, appliances and fixture requirements |
| Isometric Analysis | 5 | Three-dimensional layouts, drainage, vents, sizing, direction and system relationships |
Sanitary Drainage, Vents, Water Supply, and Storm Drainage account for 63 scored questions. Give those four systems the largest share of Colorado Journeyman and Journeyworker exam prep time.
Current Colorado Journeyworker Exam References
PSI supplies the governing code books at the testing center, so candidates should prepare for clean-code navigation instead of relying on personal tabs.
| Reference | Primary Use | Current Exam Note |
|---|---|---|
| 2021 International Plumbing Code | Drainage, vents, water supply, fixtures, traps, storm drainage and general plumbing requirements | Detailed PSI Reference List uses 2021 through October 2026 |
| 2021 International Residential Code | Residential plumbing provisions and residential fire-sprinkler-related material | Detailed PSI Reference List uses 2021 through October 2026 |
| 2024 International Plumbing Code | Next code-cycle plumbing reference | Transition begins November 1, 2026 |
| 2024 International Residential Code | Next code-cycle residential plumbing reference | Transition begins November 1, 2026 |
| Personal Study Books | Pre-exam learning, code familiarity and practice | Study tools only; PSI supplies exam-room code references |
Reference distinction: personal IPC and IRC books are useful for study. On the actual PSI exam, candidates use the references supplied by the test center under the current bulletin.
How to Prepare for PSI-Supplied Code Books
Winning code-navigation habits
- Practice in clean unmarked IPC and IRC books
- Know chapter organization before test day
- Practice index terms and table lookup
- Memorize basic formulas PSI does not provide
- Practice drainage, vent, water and isometric calculations
- Complete timed exam prep under the full 240-minute limit
Avoid these exam-prep mistakes
- Depending on personal tabs and highlights
- Assuming Colorado amendments are tested when PSI says they are not
- Mixing the 2021 and 2024 code cycles
- Ignoring plumbing formulas because code books are supplied
- Under-studying drainage and venting
- Spending too long on one calculation or code search
Current PSI rule: the International Plumbing Code and International Residential Code are provided at the testing center, and the supplied references may not be written in, highlighted, underlined, or indexed.
Journeyworker License vs Plumbing Contractor Registration
The Colorado Journeyworker Plumber license is an individual credential. A plumbing contractor registration is a separate business requirement.
Colorado law requires a plumbing contractor to be a Master Plumber or employ a Master Plumber full time who supervises the contractor's plumbing work. A Journeyworker license does not make the license holder the responsible Master Plumber for a plumbing contractor business.
That distinction matters for the word contractor. The Journeyworker exam is an important licensing step, but the contractor business still needs the responsible-Master structure required by Colorado law.
Colorado Journeyworker vs Master Plumber vs Plumbing Contractor
These credentials and business roles are connected, but they are not interchangeable.
| Path | Focus | Important Note |
|---|---|---|
| Journeyworker Plumber | Individual plumbing license formerly called Journeyman Plumber | Requires 6,800 hours and the applicable PSI exam |
| Master Plumber | Higher individual plumbing license | Can serve as the responsible Master for a plumbing contractor |
| Plumbing Contractor Registration | Business authority to operate as a plumbing contractor | Requires the contractor to be or employ a responsible Master Plumber |
| PSI Journeyworker Exam | Code knowledge, systems, calculations and isometric analysis | Passing alone does not complete the license process |
| Contractor Exam Prep | Study, practice, clean-code navigation and exam strategy | Study support, not a state-issued credential |
Use the right term. Colorado now uses Journeyworker Plumber in official licensing material, while Journeyman Plumber remains common in search and older training content.
Colorado Journeyworker Plumber Licensing Requirements
Journeyworker Applicant
Experience Path
- 6,800 hours of practical plumbing experience
- Document training and experience under current Board rules
- Applicants cannot self-verify their own experience
- Qualifying school or military training may receive limited credit under Board rules
PSI Exam Candidate
Exam Prep Focus
- 100 scored questions
- 240-minute scored examination
- PSI-supplied IPC and IRC references
- Timed code navigation, formulas and isometric practice
Future Plumbing Contractor
Business Path
- Separate contractor registration requirement
- Responsible Master Plumber required
- Journeyworker is not the responsible-Master credential
- Follow current Colorado business-registration rules
Six-Week Colorado Journeyworker Plumber Study Plan
Use the official PSI topic weights to balance drainage, vents, water supply, formulas, isometrics, clean-code navigation and full-length practice.
Week 1: Setup
- Review the PSI outline
- Confirm 2021 or 2024 code cycle
- Learn IPC and IRC structure
- Practice clean-book navigation
Week 2: Drainage
- Drainage fixture units
- Pipe sizing and slope
- Building drains and sewers
- Cleanouts and testing
Week 3: Vents and Water
- Vent sizing
- Wet and circuit venting
- Water distribution
- Pressure and backflow
Week 4: Storm and Special Systems
- Storm drainage
- Fixtures and equipment
- Water heaters
- Traps and indirect waste
Week 5: Isometrics and Formulas
- Isometric analysis
- Slope and geometry
- Pipe-sizing calculations
- Formula recall
Week 6: Simulation
- 100-question timed exams
- 240-minute pacing plan
- Weak-area repair
- PSI rule review
How Hard Is the Colorado Journeyworker Plumber Exam?
The challenge is the combination of 100 scored questions, plumbing calculations, code navigation, isometric analysis, and a 240-minute scored-exam time limit.
Common avoidable problems include weak drainage and vent prep, code-cycle confusion, dependence on personal tabs, slow formula recall, poor isometric reading, and spending too long on one code search. Structured contractor exam prep turns those problems into measurable practice goals.
Colorado Journeyworker Plumber Exam Day Checklist
Do this
- Arrive according to current PSI check-in instructions
- Bring the current identification required by PSI
- Know which IPC and IRC code cycle applies
- Use the PSI-supplied code books efficiently
- Use a flag-and-return strategy for slow calculations
- Manage time against the 240-minute scored-exam limit
Do not do this
- Plan to use your personal highlighted IPC or IRC
- Bring unauthorized study notes or formula sheets
- Assume Colorado amendments are part of the PSI exam
- Mix 2021 and 2024 code rules during final practice
- Spend too long on one isometric or calculation
- Assume passing PSI alone completes the license process
After You Pass the Colorado Journeyworker Plumber Exam
Current PSI and Board materials describe the process as taking the required exam and then submitting the Colorado license application after passing.
The applicant must still document the required 6,800 hours of practical plumbing experience and satisfy the remaining State Plumbing Board requirements.
If the long-term goal is to operate a plumbing contractor business, remember that Colorado's responsible-Master requirement is separate from Journeyworker licensure.
Colorado Journeyman and Journeyworker Plumber Exam Prep Options
Select preparation that builds code knowledge, clean-reference navigation, formula recall, isometric-analysis skill, and full-length testing endurance.
Online Journeyworker Exam Prep
Structured Study
- 700+ practice questions
- 8+ hours of guided video training
- IPC chapter review
- Simulated computer-based practice
Colorado Journeyman Study Guide
Code and Math Review
- 2024 IPC-based study
- Plumbing calculations
- Isometric walkthroughs
- Test-taking strategy
Complete Books and Course Package
Full Study System
- Study references
- Online exam prep course
- Code-navigation practice
- Exam-focused review materials
Use the Correct Colorado Plumbing Credential
Journeyworker exam prep prepares an individual for the PSI plumbing examination. It does not itself create a plumbing contractor registration.
Ā· Journeyworker is the current official name for the former Journeyman license
Ā· PSI administers the licensing examination
Ā· Journeyworker requires 6,800 hours of practical plumbing experience
Ā· Plumbing contractor businesses require the responsible-Master structure set by Colorado law
Choose the credential first, then choose the exam prep that matches it.
Colorado Journeyman and Journeyworker Plumber Exam Prep FAQ
Colorado Journeyworker Plumber Exam Basics
Colorado now officially calls this the Journeyworker Plumber exam. The current PSI bulletin lists 100 scored questions.
The current PSI bulletin allows 240 minutes, or four hours, for the 100 scored questions.
The current PSI bulletin lists a 70 percent passing requirement, equal to 70 correct scored answers out of 100.
Yes. PSI may add up to 10 unscored pretest questions, with up to 30 additional minutes when those questions are included.
Colorado changed the official exam and license terminology from Journeyman Plumber to Journeyworker Plumber. Many candidates still search for the older Journeyman term, so both phrases are commonly used for the same license level.
The exam uses code references supplied at the PSI testing center. Candidates use those provided references under the current PSI rules rather than bringing personal study books into the exam room.
No. The current PSI bulletin says the IPC and IRC are provided at the test center and the supplied references may not be written in, highlighted, underlined, or indexed.
As of September 29, 2026, the detailed PSI Reference List uses the 2021 IPC and 2021 IRC. PSI says the exam transitions to the 2024 IPC and 2024 IRC on November 1, 2026.
The current PSI bulletin says the 2021 IPC and IRC remain available upon request until February 1, 2027.
The detailed PSI Reference List states that the exam is based on the listed IPC and IRC editions and is not based on Colorado state amendments.
Licensing, Contractor Rules and Exam Prep
Sanitary Drainage Systems has 20 scored questions, Vents has 18, and Water Supply has 15. Together those three areas account for 53 of the 100 scored questions.
The current PSI content outline assigns 5 scored questions to Isometric Analysis.
The current PSI bulletin says candidates are responsible for common plumbing theory formulas and that formulas are not provided at the testing center.
Colorado law and current Board rules require 6,800 hours of practical plumbing experience for the Journeyworker license.
Current PSI and Board materials describe a process in which candidates take the required exam and submit the license application after passing. Candidates should follow the current PSI scheduling instructions and DORA application process rather than relying on older pre-approval wording.
No. The Journeyworker license is an individual plumbing credential. A plumbing contractor registration is a separate business requirement, and Colorado requires a responsible Master Plumber for the contractor business.
No. Colorado contractor rules require the plumbing contractor to be a Master Plumber or employ a Master Plumber full time who supervises the plumbing work.
Study by the PSI topic weights, practice clean-code navigation in the IPC and IRC, memorize common formulas, work isometric problems, and complete full 100-question practice exams under the 240-minute limit.
Start with Sanitary Drainage Systems, Vents, and Water Supply because those three categories account for 53 percent of the scored exam.
Yes. Colorado requires active plumbing licensees to meet continuing-education requirements under current DORA rules. Initial licensees should confirm when CE begins for their first renewal cycle.
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Use current official Colorado and PSI sources together with focused contractor exam prep for the complete Journeyworker licensing path.
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