What is a jet pump?

A jet pump is an above-ground pump assembly that relies on an ejector, or venturi device, to create suction and pull water from a well. Unlike submersible pumps that sit in the water column, jet pumps mount outside the wellhead, making them easier to service and repair. A portion of the pump's discharge flow returns through a small venturi tube into the well, creating low pressure that draws water upward to the pump intake.

Two main types serve different depths. Shallow well jet pumps work for static water levels under 25 feet and consist of a single-pipe system connecting the pump to the well. Deep well jet pumps handle depths to around 110 feet using a two-pipe configuration, with a jet assembly submerged in the well that receives pressurized flow from the pump above. The ejector principle means deep well systems require larger pumps and more power.

Jet pumps are common in Bonner County properties where well depth and site conditions suit above-ground installation. They perform well in stable groundwater conditions and are less expensive than submersibles for shallow applications. Because the pump operates at the surface, priming is straightforward, and components are accessible for troubleshooting. Check valve failure, ejector clogging from sediment, and loss of prime are typical repair scenarios.

If you need service for a failing jet pump, local well pump repair providers can diagnose ejector performance, check valve function, and pressure tank issues specific to your well's depth and flow requirements.