Plumbing is the distribution and disposal of water. It also requires permits and inspections. Most plumbing systems are made of copper or plastic. These materials can withstand pressure, corrosion, and other factors. Plumbing is important for a variety of reasons, including distributing potable water, removing waste, and even heating a facility.

Plumbing is an essential part of any construction project. It involves the installation and maintenance of pipes, and alterations to the ventilation system, appliances, and water supply systems. It does not, however, include drilling water wells, installing water softening equipment, or manufacturing plumbing fixtures. Plumbing systems are comprised of three main components: a safe drainage system, adequate water supply, and plumbing fixtures.

The most common route to becoming a plumber is through an apprenticeship program. This program is sponsored by a company, local union, or a trade school. It usually lasts four to five years and requires a combination of classroom and on-the-job training. The educational hours take place at trade or technical schools, while the on-the-job training involves hands-on experience.

The sewage system also requires a drainage system, which is located in a basement or crawl space. The drainage system has many components, and all should be in good working order.