Plumbers are skilled tradespeople who specialize in installing and repairing systems that transport water, gas, and waste in residential and commercial buildings. They work with various materials, including pipes, fixtures, and fittings, to ensure that plumbing systems function properly. Their tasks often include fixing leaks, unclogging drains, and installing appliances like sinks and toilets. To become a plumber, individuals typically undergo training through apprenticeships or vocational programs, where they learn about plumbing codes, safety practices, and system design. Many plumbers are licensed professionals, which means they have met specific requirements set by local or state authorities to ensure quality and safety in their work.