A plumber is a tradesperson who specializes in installing and maintaining systems used for potable (drinking) water, and for sewage and drainage in plumbing systems.[1][2]
The origin of the word “plumber” dates from the Roman Empire.[3] [4] Roman roofs used lead in conduits and drain pipes[5] and some were also covered with lead; lead was also used for piping and for making baths.[6] The Latin for lead is plumbum. In medieval times, anyone who worked with lead was referred to as a plumber; this can be seen from an extract about workmen fixing a roof in Westminster Palace; they were referred to as plumbers: “To Gilbert de Westminster, plumber, working about the roof of the pantry of the little hall, covering it with lead, and about various defects in the roof of the little hall”.[7] Thus a person with expertise in working with lead was first known as a Plumbarius which was later shortened to plumber.