In plumbing, what does the term 'drainage' refer to?

The term 'drainage' specifically refers to the system of pipes designed to remove wastewater from a building. This system plays a critical role in maintaining sanitary conditions by ensuring that sewage and greywater safely exit the premises and are directed into public sewer systems or septic tanks.

Drainage systems include various components, such as drains, waste pipes, vent pipes, and sewage pipes, all of which work together to facilitate the proper handling of wastewater. By functioning effectively, these systems prevent overflow, backups, and potential health hazards associated with stagnant water or sewage.

Understanding drainage is crucial for professionals in plumbing and building services, as it directly impacts the functionality and hygiene of the entire plumbing system within a structure.