What is the primary function of a wastewater lift station?

A wastewater lift station's primary function is to pump wastewater from lower to higher elevations. Because gravity flow is typically utilized in sewer systems, lift stations become necessary when the sewage needs to move uphill or across uneven terrain where gravity alone cannot facilitate the flow. Lift stations ensure that wastewater can reliably reach treatment facilities, especially in areas where the topography does not allow for direct flow.

While other functions, such as treating wastewater directly or filtering solids, may be part of the broader wastewater management system, they do not specifically define what a lift station does. Similarly, storing wastewater until treatment does occur, but it is not the primary role of a lift station; rather, the focus is on moving the wastewater effectively to prevent overflow or backups in the sewer system.