Basement plumbing refers to the plumbing system installed in a basement, which includes the pipes, valves, and fixtures that supply water and remove waste. Basements are typically located below ground level, which can pose unique challenges for plumbing installation and maintenance.

Basement plumbing may include the installation of a sump pump to prevent flooding, as well as a sewage ejector pump to remove waste from basement plumbing fixtures such as toilets, sinks, and showers. Additionally, a basement may have a water heater, washing machine, or other water-using appliances that require plumbing connections.