A plumber is a skilled tradesperson responsible for installing, repairing, and maintaining water, gas, and drainage systems in residential, commercial, and industrial buildings. Plumbers work with pipes, fixtures, and appliances such as sinks, toilets, water heaters, and boilers. They diagnose and fix leaks, blockages, and other plumbing issues, ensuring that systems function safely and efficiently. Plumbers also read blueprints, follow building codes, and may work on new construction projects or renovations. Their job requires technical knowledge, problem-solving skills, and physical endurance.