Key Certifications for Plumbing Professionals
Here are the most recognized and valuable certifications in the plumbing trade, ranked by importance and employer recognition.
8,000 hours on-the-job + classroom instruction. UA apprenticeships are the most prestigious. Covers water supply, drainage, gas, fire suppression.
Working license for plumbers. Allows independent installation of plumbing systems under a master's permit.
Required to pull permits and run your own plumbing business. The highest individual plumbing license.
Specialized certification for testing backflow prevention devices. Required by most water utilities. High demand; adds $5–$15K/year in earning potential.
Required for work in hospitals and medical facilities. Significant premium — medical gas work pays 30–50% above standard plumbing.
Career Path in Plumbing
Average Salary: $60,000–$100,000
Job Outlook (BLS): 4% growth from 2024 to 2034 (BLS)
How to Get Started
Most trades have a clear entry path. Here's the fastest route to becoming a certified plumbing professional:
- Start with an apprenticeship or entry-level position to gain documented work experience — required for most certifications.
- Pursue entry-level certifications first (like EPA 608 for HVAC or OSHA 10 for safety) — these are inexpensive, quick, and immediately valuable.
- Accumulate the required work experience hours for your target certification. Keep records of projects, employers, and hours.
- Apply for the certification exam. Most exams have study materials available — dedicate 40–80 hours of study time for mid-level certifications.
- Pass your exam and add the credential to your resume, LinkedIn, and business materials. Recertify on schedule to maintain active status.
State Licensing vs. National Certification
Important: Most states require plumbing contractors to have a state license IN ADDITION to national certifications. National certifications demonstrate skill and knowledge; state licenses give you legal authorization to work and pull permits.
Check your state's requirements in our state licensing guides. Many states recognize national certifications as partial exam waivers or experience documentation.