The minimum size discharge pipe from an ejector or pump in a single dwelling unit is how many inches?

The minimum size discharge pipe from an ejector or pump in a single dwelling unit is established at 2 inches. This specification is based on the need to ensure sufficient flow rates and proper drainage of wastewater. A discharge pipe that is too small can lead to clogs, backflow issues, and reduced efficiency of the ejector or pump system.

A 2-inch pipe provides a balance between adequate capacity to handle typical household wastewater flow and manageable pressure requirements. It allows for effective transport of effluent without the risk of obstructed flow due to pipe size limitations. Larger pipe dimensions, while providing even more capacity, may not be necessary for standard residential applications, hence the code specifies 2 inches as the minimum size requirement for effective and reliable performance.