Plumbers specialize in the installation and maintenance of water systems. Like electricians, they are required to obtain a license from a trade or vocational school and have a background in various aspects of industrial, domestic, and communal pipe work, water heating (steam- and gas- fitters), water treatment (such as water cleaning and purification), drainage, sewer networking, dynamics of water flow, water storage, temperature adjustment, and dangers of water hazards.

Plumbers get their name from the Latin Plumbum, for 'lead' ,since the ancient Romans used pipes made from lead. The term therefore refers to the metallic element out of which their main building material is made.

Interestingly, Einstein, the father of modern mathematics, admired the plumber:

If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber in the hope to find that modest degree of indepe