Plumbing major

Plumbing: courses, careers, and where to study

Plumbing programs train you to lay out, install, and maintain the water supply, drain-waste-vent, and gas piping that keep buildings safe and sanitary, working to plumbing code.

A plumbing program teaches you to read isometric and plan drawings, then size, cut, join, and pressure-test the piping systems that move potable water, drain waste, vent sewer gases, and carry natural gas through homes and commercial buildings. You practice with copper sweated by torch, PEX joined with crimp or expansion fittings, ABS and PVC solvent-welded for drains, and threaded or grooved steel for gas and process lines, and you learn to set fixtures, water heaters, traps, and backflow preventers. Coursework covers the drain-waste-vent principles, water distribution and pressure, venting, and the model codes such as the UPC and IPC. Where an Electrician works conductors and circuits and an HVAC technician handles refrigerant and airflow, plumbing centers on liquids, gases, and the sanitary systems that protect public health.

Most plumbers enter through a registered apprenticeship that pairs paid on-the-job hours with related classroom instruction, often through a union local, a contractor association, or a community college, while some start with a certificate before joining a crew. Apprentices typically advance to journey-level after completing required hours and passing a state or local exam, then may pursue a master plumber license that allows pulling permits and supervising work; backflow tester and medical-gas endorsements are separate credentials worth verifying with your jurisdiction. OSHA safety training is common, and a CDL may matter for service work. Licensing rules, scope, and reciprocity differ by state and locality, and pay and demand vary by region, employer, specialty, and experience. A program is preparation for that path, not a guarantee of any particular wage or job.

In federal data for the closely related occupation of plumbers, pipefitters, and steamfitters, the U.S. Bureau of Labor Statistics reports a 2024 median wage of $62,970 and projects employment to grow about 4.5% from 2024 to 2034; a high school diploma or equivalent is the typical entry-level education for that occupation. National figures are occupation-wide medians across all experience levels, not starting wages or graduate outcomes.