Plumbing (from the Latin plumbum for lead as pipes were once made from lead)'s the skilled trade of working with pipes, tubing and plumbing fixtures for drinking water systems and the drainage of waste. A plumber's someone who installs or repairs piping systems, plumbing fixtures and equipment such as water heaters. The plumbing industry's a basic and substantial part of every developed economy due to the need for clean water, and proper collection and transport of wastes. Plumbing also refers… (More on Plumbing)