Introduction to Plumbing Careers

Becoming a plumber is a rewarding career choice that offers stability and opportunities for advancement. Plumbers play a crucial role in maintaining and installing systems that ensure the safe and efficient delivery of water, gas, and waste disposal.

Andrew Harlow

01 Sep 2025 — 3 min read

Photo by Timur Shakerzianov / Unsplash

This article outlines the educational pathways, certification requirements, and career progression for aspiring plumbers.

a man working on a pipe in a cabinet — Photo by Timur Shakerzianov / Unsplash

Plumbing Certificate Programs

For those interested in pursuing a career in plumbing, several institutions offer certificate programs designed to provide foundational knowledge and skills. Notable programs are available at Tri-C, Ranken Technical College, Johnson County Community College, LaGuardia Community College, and Midlands Technical College. These programs typically include a mix of classroom instruction and hands-on training, equipping students with the practical skills needed in the field.

Becoming a Plumber Trainee in Washington

In Washington, individuals must meet specific requirements to become a plumber trainee. Applicants must be at least 16 years old and apply for a plumber trainee certificate. Trainees work under the supervision of a certified plumber and must complete a designated number of supervised work hours to qualify for the plumber examination. Additionally, trainees must complete 8 hours of approved continuing education annually to renew their certificate.

Certification Levels in Washington

Washington offers several certification levels for plumbers, each with distinct requirements:

Journey Level Plumber: Requires four years (8,000 hours) of experience as a plumber trainee, with at least two years (4,000 hours) in commercial or industrial installations.
Medical Gas Installer: Requires completion of 32 hours of training in an approved medical gas training course.
Residential Plumber: Certification is limited to work in single-family homes, duplexes, and apartment buildings.

Pathway to Becoming a Master Plumber

The typical career path in plumbing begins with an apprenticeship, which lasts 4-5 years and involves supervised work. After completing the necessary training, individuals can progress to journeyman status by passing an examination. Master plumbers, who hold the highest certification, may need to complete additional courses before testing. This progression allows plumbers to take on more complex projects and potentially manage their own businesses.

Online Plumbing Programs

For those seeking flexibility, online plumbing diploma programs are available from institutions like Penn Foster. These programs allow students to learn at their own pace while covering essential topics in plumbing. Online programs are particularly beneficial for individuals balancing work or other commitments.

Diverse Job Roles in Plumbing

The plumbing industry offers a variety of job roles, including plumbing technicians, pipefitters, steamfitters, pipelayers, gas service technicians, project managers, and business owners. Each role requires specific skills and expertise, allowing individuals to specialize in areas that align with their interests and career goals.

Continuing Education and Reciprocal Certification

Continuing education is a critical component of maintaining plumbing certification. Many states mandate specific hours of ongoing education annually to ensure plumbers stay updated on industry standards and practices. Additionally, Washington has reciprocal certification agreements with Idaho for journey level plumbers, facilitating easier cross-state practice for certified professionals.

Conclusion

A career in plumbing offers numerous opportunities for growth and specialization. By completing a certificate program, gaining hands-on experience, and pursuing the necessary certifications, individuals can build a successful career in this essential trade. Whether starting as an apprentice or advancing to a master plumber, the plumbing industry provides a stable and rewarding career path.

FAQs

What are the age requirements to become a plumber trainee in Washington?
Applicants must be at least 16 years old to apply for a plumber trainee certificate in Washington.

What is required to become a journey level plumber in Washington?
To become a journey level plumber in Washington, individuals must complete four years (8,000 hours) of experience as a plumber trainee, including at least two years (4,000 hours) in commercial or industrial installations.

Are there online options for plumbing education?
Yes, institutions like Penn Foster offer online plumbing diploma programs, providing flexible learning options for aspiring plumbers.