A plumber is someone who specializes in the installation and repair of pipes which are used to carry water, gas, sewage, and wastewater. These pipes are often collectively referred to as “plumbing”. When a new building is being constructed, a plumber is typically part of the construction crew.
He or she determines where pipes should be laid, and takes care of the installation of these pipes. They also typically connects the internal plumbing to external fixtures like sinks, showers, and washing machines. A plumber may also handle gas lines for heating and cooking, and some pursue certification in heating and cooling systems as well. Often, they work in concert with an electrician, a professional who specializes in electrical matters.
Plumbers also repair breaks and replace old piping. A plumber may be called to unclog a toilet, fix a leaky faucet, or to check on old pipes which may be warped or leaking. Things like drains and repiping can also get quite complicated, and plumbers sometimes uncover unpleasant surprises like rot during their course of their work, which may necessitate getting another professional involved to fix the problem.