Plumber

Plumbers are vital to protecting public health and water security in Hawaiʻi. They install, maintain, and repair piping systems that deliver clean water and remove wastewater from homes, businesses, and public buildings. In the context of water and wastewater, plumbers also play a key role in supporting decentralized wastewater systems, rainwater catchment, and graywater reuse systems in rural and off-grid communities.

Plumbers work on everything from basic water lines to advanced pumps, backflow prevention devices, and sewer hookups. Their work directly affects sanitation, water conservation, and infrastructure resilience across the islands.

Education & Training

This position typically requires:

  • A high school diploma or GED

  • Enrollment in a registered plumbing apprenticeship program (4–5 years)

  • Passing the State of Hawaiʻi Journeyman Plumber Exam

  • A current State of Hawaiʻi plumber’s license, issued by the Board of Electricians and Plumbers

  • Ongoing safety training (e.g., OSHA, confined space, HAZMAT)

In Hawai’i, you can study at:

  • Plumbers & Fitters UA Local 675 Apprenticeship Program

    • Offers hands-on training and classroom instruction in plumbing, pipefitting, medical gas, and wastewater systems

    • Website: https://www.plumbershawaii.com

  • Honolulu Community College – Apprenticeship & Trade Technology Division

  • University of Hawaiʻi Community Colleges

    • Offer pre-apprenticeship and related technical courses (e.g., blueprint reading, math, safety)

    • Website: https://uhcc.hawaii.edu

  • Hawaiʻi Department of Commerce and Consumer Affairs (DCCA)

Knowledge, Skills & Abilities

Knowledge of:

  • Plumbing codes, standards, and safety practices

  • Wastewater drainage and venting systems

  • Potable water system design and backflow prevention

  • Pumps, valves, and fixtures used in residential and commercial plumbing

  • Environmental considerations for stormwater and graywater systems

  • Blueprint reading and system schematics

Skill in:

  • Installing, maintaining, and repairing pipes, valves, tanks, and water heaters

  • Using specialized plumbing tools, cutting and joining pipes

  • Identifying leaks, corrosion, or system inefficiencies

  • Performing hydrostatic testing and system inspections

  • Troubleshooting low pressure, clogs, or contamination risks

Ability to:

  • Work in confined spaces and under variable field conditions

  • Communicate with clients, inspectors, and contractors

  • Understand and follow building and plumbing codes

  • Work independently or as part of a construction or maintenance team

  • Adapt to new water technologies and regulations

Scholarships & Opportunities