Sewage Ejector Pump: What It Is and How It Works

A sewage ejector pump is a type of wastewater pump designed to move sewage and other heavily contaminated water from locations below the level of a sewer line. When gravity drainage won’t work—such as basements, below-grade bathrooms, or pits—an ejector pump helps route waste to a main drain or septic system.

Unlike clean-water pumps, sewage ejector pumps are built to handle solid waste and higher concentrations of organic matter. Many models use a grinder or macerating system to reduce particle size, helping prevent clogs.