If you’re in your final year of a plumbing apprenticeship—or considering one—you’re probably wondering, “How much does a 4th year apprentice plumber make?” It’s a smart question. After years of hard work, early mornings, and hands-on training, you deserve to know what your skills are worth in today’s market. In this guide, we’ll break down real earnings, regional pay differences, and what comes next in your plumbing career—all based on the latest U.S. data.
What Is a 4th Year Apprentice Plumber?
A 4th year apprentice plumber is typically in the final phase of a 4- to 5-year apprenticeship program. By this stage, you’ve logged thousands of on-the-job training hours and completed classroom instruction in plumbing codes, safety protocols, blueprint reading, and system design.
According to the U.S. Department of Labor, plumbing apprenticeships are structured programs that blend paid work with technical education—often sponsored by unions (like UA Plumbers & Pipefitters) or contractor associations.
💡 Did you know? The Bureau of Labor Statistics (BLS) reports that the median annual wage for journeyman plumbers in 2024 was $60,090, but apprentices earn less—progressively increasing each year.
Average Salary for a 4th Year Apprentice Plumber (2025 Data)
In 2025, a 4th year apprentice plumber in the United States typically earns between $22 and $32 per hour, depending on location, employer, and union status.
Here’s a realistic breakdown:
| 1st Year | $15 – $19 | $31,200 – $39,500 |
| 2nd Year | $17 – $22 | $35,400 – $45,800 |
| 3rd Year | $19 – $26 | $39,500 – $54,100 |
| 4th Year | $22 – $32 | $45,800 – $66,600 |
| Journeyman | $28 – $45+ | $58,200 – $93,600+ |
Source: U.S. Bureau of Labor Statistics, 2024 Occupational Employment and Wage Statistics; National Center for Construction Education & Research (NCCER)
Key factors influencing your pay:
- Geographic location (e.g., California vs. Mississippi)
- Union vs. non-union programs (union apprentices often earn 10–20% more)
- Type of employer (residential, commercial, or industrial plumbing)
- Overtime availability (common in construction—can boost annual income by 15–30%)
For example, a 4th year apprentice in New York City may earn $30–$35/hour with benefits, while someone in rural Texas might average $20–$24/hour.
How Does Pay Progress Through Apprenticeship Years?
Plumbing apprenticeships follow a structured wage progression. Most programs increase pay by 5–10% per year as you gain skills and pass competency milestones.
A typical union-based program (like those from the United Association) might look like this:
- Year 1: 50% of journeyman wage
- Year 2: 60%
- Year 3: 70%
- Year 4: 80–85%
- Year 5 (if applicable): 90–95%
So if a journeyman plumber earns $35/hour in your area, your 4th year pay would be roughly $28–$30/hour.
📌 Pro Tip: Always ask your program sponsor for their official wage scale—it’s usually published and non-negotiable.
Regional Salary Differences: Where Do 4th Year Apprentices Earn the Most?
Location dramatically impacts earnings. According to BLS and industry surveys, the top-paying states for plumbing apprentices include:
- Alaska – Avg. 4th year wage: $33.50/hour
- Illinois – $31.20/hour (especially Chicago metro)
- California – $30.80/hour (high cost of living offset by union strength)
- New Jersey – $29.75/hour
- Washington – $29.10/hour
In contrast, states like Mississippi, Arkansas, and West Virginia average $19–$23/hour for 4th year apprentices.
You can explore localized data via the BLS Occupational Employment Statistics tool or check union wage scales through the United Association .
Benefits Beyond the Hourly Rate
Don’t overlook non-wage compensation, which can add thousands to your total package:
- Health insurance (medical, dental, vision)
- Pension or 401(k) contributions
- Paid time off (PTO)
- Tool allowances
- Continuing education credits
Union apprentices often receive full benefits from day one—non-union programs vary widely. Always ask: “What’s included in my total compensation?”
What Happens After Your 4th Year?
Once you complete your apprenticeship (usually after 8,000+ hours of work and 500+ classroom hours), you become eligible to take your state or local journeyman plumber exam.
After passing, you can:
- Work independently (no supervision required)
- Earn 20–40% more annually
- Specialize in areas like gas fitting, medical gas, or green plumbing
- Start your own business (after gaining experience)
⚠️ Note: Licensing requirements vary by state. For example, California requires a CSLB license , while Texas uses TSBPE. Always verify local rules.
How to Maximize Your Earnings as a 4th Year Apprentice
- Track all your hours meticulously – Required for certification and wage progression.
- Seek overtime – Many contractors offer 1.5x pay after 40 hours/week.
- Join a union program – Higher wages, better benefits, and job security.
- Get certified in specialties – Like backflow prevention or solar water heating.
- Network with journeymen – They often recommend reliable apprentices for higher-paying gigs.
FAQ Section
Q: Do 4th year plumbing apprentices get benefits?
A: Yes—especially in union programs. Benefits often include health insurance, retirement plans, and paid holidays. Non-union employers may offer limited or no benefits, so always clarify during hiring.
Q: Can a 4th year apprentice work without supervision?
A: Generally, no. Most states require apprentices to work under a licensed journeyman or master plumber until they earn their own license—even in the final year.
Q: How many hours do 4th year apprentices work per week?
A: Typically 40 hours/week on the job, plus 1–2 evenings or weekends for classroom training (around 144–200 hours per year).
Q: Is plumbing apprentice pay taxed?
A: Yes. Apprentices are W-2 employees, so federal/state taxes, Social Security, and Medicare are withheld—just like any other job.
Q: What’s the difference between an apprentice and a journeyman plumber?
A: An apprentice is still in training and must work under supervision. A journeyman has completed the program, passed licensing exams, and can work independently on most plumbing systems.
Q: Are plumbing apprenticeships paid?
A: Yes! Unlike many internships, plumbing apprenticeships are paid positions from day one—a key advantage of skilled trades.
Conclusion
So, how much does a 4th year apprentice plumber make? On average, $45,800 to $66,600 per year—with strong potential to earn more based on location, union status, and overtime. You’re not just learning a trade; you’re building a lucrative, recession-resistant career with room to grow into six-figure territory as a licensed journeyman or business owner.
If you found this guide helpful, share it with a friend considering a trade career! And don’t forget to check your state’s plumbing board for exact licensing steps. Your future in the trades starts now—and it pays well.
All salary data reflects 2024–2025 U.S. averages from the Bureau of Labor Statistics and industry training councils. For more on apprenticeship structures, see the U.S. Department of Labor’s overview on registered apprenticeships .
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