As the state’s construction industry continues to expand, demand for plumbing services will remain high, creating a promising career outlook for workers entering the field.
In addition to providing a stable income, these roles are essential for supporting the state’s infrastructure and growth.
Getting started as a plumber begins with the right training.
Top Plumber Training Schools in Idaho
- Twin Falls, Burley
- Nampa, Boise
- Post Falls, Rathdrum, Sandpoint
- Caldwell
College of Southern Idaho
The Plumbing Apprenticeship is a four-year, state-approved program from CSI's workforce division that leads to a journeyman plumber license. Apprentices need an Apprentice Plumbing License and must work under a licensed plumber while they train. Related classroom instruction runs one evening a week in Twin Falls, or the course can be taken fully online. Tuition is not published, books are extra and a seat is held only with full payment. Journeymen can add 15 general-education credits for CSI's Applied Technology & Apprenticeship AAS.
College of Western Idaho
Plumbing apprentices take CWI's classroom instruction one year at a time, in four 8-week sessions at the Canyon County Center, while working in the trade, which CWI requires. The college says the program meets Idaho apprentice requirements and prepares students for journeyman certification. Tuition is $1,500 a year if paid in full, or $375 a session, with materials extra (October 2026). Ask how many years are needed, because the program page does not say.
North Idaho College Workforce Training Center
NIC's four-year Plumbing apprenticeship pairs 144 hours of related instruction a year with 8,000 hours of on-the-job work and leads to the Idaho Plumbing Journeyman exam. A sponsoring employer is required, and apprentices need an Idaho DOPL apprentice card from age 16. In-person classes run August to May at the Parker Technical Education Center in Rathdrum, Idaho, and an online section runs October to May after an in-person orientation. The Fall 2026 catalog lists $1,950 a year.
Treasure Valley Community College
This is related classroom training for registered plumbing apprentices, so you need an apprenticeship and a sponsoring employer before you enroll; there is no open-enrollment plumbing credential. The four-year, 576-hour Journeyman Plumber curriculum is certified for Idaho and Oregon apprentices and mixes small in-person classes, Zoom sessions and Canvas modules. TVCC's Caldwell Center administers it. The course fee is $900 plus about $180 in textbooks; Idaho charges a $50 state registration fee.
What You Study in a Plumbing Program in Idaho
A plumbing program in Idaho offers a structured curriculum covering essential skills, advanced techniques, and industry-specific knowledge.
Many programs cover topics like the following:
- Introduction to Plumbing Basics: Foundational courses like Introduction to the Plumbing Profession, Plumbing Safety, and Plumbing Tools provide an overview of the trade, focusing on safety protocols and tool usage.
- Mathematics and Technical Drawings: Modules such as Introduction to Plumbing Math and Introduction to Plumbing Drawings prepare students to perform calculations, interpret blueprints, and design plumbing systems.
- Materials and Installation Techniques: Students gain hands-on experience with Plastic Pipe and Fittings, Copper Tube and Fittings, Cast-Iron Pipe and Fittings, and Steel Pipe and Fittings. These courses teach material handling, joining, and testing.
- System Design and Maintenance: Core modules like Introduction to DWV Systems, Introduction to Water Distribution Systems, and Sizing DWV and Storm Systems cover the design, installation, and maintenance of plumbing systems for various applications.
- Advanced Applications: Topics such as Fuel Gas and Fuel Oil Systems, Potable Water Supply Treatment, and Compressed Air Systems introduce students to specialized plumbing tasks and equipment.
- Business and Leadership Skills: Advanced modules include Business Principles for Plumbers and Fundamentals of Crew Leadership, equipping students with management and entrepreneurial skills for career growth.
- Specialized Plumbing Systems: Training extends to unique areas like Swimming Pools and Hot Tubs, Hydronic and Solar Heating Systems, and Medical Gas and Vacuum Systems.
- Practical Applications and Testing: Students learn to install and test systems such as Roof, Floor, and Area Drains, Water Heaters, and Sewage Pumps. They also explore techniques for fire-stopping, insulation, and structural penetrations.
By completing this comprehensive curriculum, graduates are well-prepared to enter Idaho’s plumbing industry, with expertise in both residential and commercial plumbing systems.
How to Become a Plumber in Idaho
To become a plumber in Idaho, candidates must start as registered apprentices with the Idaho Division of Building Safety, completing 8,000 hours of supervised work and 144 hours of annual classroom instruction over four years.
After passing the journeyman exam, they can advance to master plumber status with four additional years of experience and a master-level exam.
Aspiring plumbers must be at least 16 to begin their career path.
Plumbing Apprenticeship Requirements in Idaho
To start the plumbing trade, candidates must register as an apprentice with the Idaho State Plumbing Board. The board handles plumbing licensing and regulations statewide. This registration allows work under licensed journeyman supervision while completing required training.
Idaho mandates 8,000 hours of supervised work experience alongside 144 hours of classroom instruction per year for 4 years. Apprentices must maintain continual employment under a licensed plumbing contractor throughout their training.
Types of Idaho Plumber Licenses
Apprentice Plumber
Apprentices must maintain active registration while completing their training hours. Registration renewal occurs annually, with apprentices documenting their progress through the DBS.
Journeyman Plumber
A journeyman license requires completing the 4-year apprenticeship program and passing the state examination. Candidates must demonstrate proficiency in both residential and commercial plumbing installations.
Master Plumber
The master plumber qualification demands a minimum of 4 years of experience as a licensed journeyman and successful completion of the master plumber examination. Candidates must demonstrate comprehensive expertise in plumbing system design and installation.
Idaho Plumber Exam
Idaho’s licensing exams assess knowledge of state plumbing codes and regulations, technical theory and calculations, and safety protocols. Candidates must achieve a minimum score of 75% to pass.
Idaho Plumbing Contractor Registration
Operating a plumbing business requires employment of or licensure as a master plumber. Additional requirements include proof of liability insurance, maintaining a state-approved contractor bond, and securing necessary local business permits and registrations.
License Maintenance
Plumbing licenses require biennial renewal with 8 hours of state-approved continuing education per renewal period. Licensees must maintain current contact information with the DBS and comply with Idaho plumbing codes.
What Employers in Idaho Look for in Plumbers
Plumbing is a rapidly growing and in-demand trade across Idaho, with opportunities ranging from entry-level apprenticeships to high-paying journeyman positions. Employers in Idaho seek plumbers who are skilled, dependable, and eager to advance in their careers. The demand spans multiple sectors, including residential, commercial, and new construction plumbing. Companies such as Wickstrom Plumbing, Heating & Cooling, Raptor Rooter & Plumbing, Magic Plumbing, Williams Plumbing, and Mike’s Mechanical Services LLC are actively hiring and offer diverse career paths.
Skills and Qualifications
Idaho employers prioritize both technical expertise and soft skills in their hiring process. Essential qualifications include:
- Licensing and Certification: Many positions require or prefer a journeyman plumber license, while apprenticeship programs provide a path for those new to the trade.
- Experience and Training: Employers like Magic Plumbing and Wickstrom Plumbing provide on-the-job training for apprentices and prefer candidates with experience using power tools and handling plumbing systems.
- Problem-Solving Abilities: Plumbers must diagnose and resolve issues efficiently, whether working on residential service calls, new construction, or remodeling projects.
- Physical Stamina and Dexterity: The job often requires lifting heavy materials, working in confined spaces, and handling complex plumbing installations.
- Customer Service and Communication: Companies such as Raptor Rooter & Plumbing emphasize the importance of professional interaction with customers, as many service calls require explaining repairs and providing solutions.
Compensation and Benefits
Employers in Idaho offer competitive wages that vary based on experience, licensing, and job complexity.
- Apprenticeships: Entry-level plumbing apprentices at Wickstrom Plumbing and Raptor Rooter & Plumbing can earn between $15 – $32 per hour, depending on experience.
- Journeyman Plumbers: Companies such as Williams Plumbing and Mike’s Mechanical Services LLC offer $28 – $35 per hour, with additional benefits like a $7,000 hiring bonus.
- Additional Perks: Many employers provide tuition assistance for apprentices, health benefits, 401(k) matching, paid time off, tool allowances, and professional development opportunities.
Career Pathways and Industry Crossover
Plumbing offers opportunities that extend into other skilled trades. Many Idaho companies integrate plumbing with HVAC, construction, and mechanical services. For example:
- HVAC and Plumbing: Companies like Wickstrom Plumbing, Heating & Cooling train apprentices in both plumbing and HVAC systems, expanding career options.
- Construction and Service Plumbing: Raptor Rooter & Plumbing works in both new construction and residential service, offering flexibility in career direction.
- Mechanical Systems: Employers such as Mike’s Mechanical Services LLC expect plumbers to install and maintain not only plumbing but also heating and cooling systems, broadening their expertise.
Conclusion
Plumbing in Idaho is a stable and rewarding career path with numerous growth opportunities. Whether starting as an apprentice or transitioning into a journeyman role, employers across the state provide training, competitive wages, and long-term career prospects. Companies emphasize a mix of technical skill, customer service, and a willingness to learn. With strong job security, excellent benefits, and potential for career advancement, plumbing remains a highly sought-after profession in Idaho’s skilled trades sector.