Plumber A plumber is a tradesperson who installs, repairs, and maintains water supply and drainage systems. Plumbers also install and repair water heaters, boilers, and other plumbing fixtures. They work in a variety of settings, including residential, commercial, and industrial buildings. Plumbers typically have a high school diploma or equivalent and an apprenticeship or vocational training program. If you are interested in becoming a plumber, there are a few things you can do to prepare. First, you should research plumbing schools and apprenticeship programs in your area. Second, you should