What Should Be Considered When Siting a New Jet Pump?

Well Casing and Jet Pump Placement

Ensure the well casing is at least 1 inch smaller in diameter than the recommended pump intake size to prevent debris accumulation. Install the jet pump near the top of the well casing, ideally 10-15 feet below the well’s surface, to minimize air entrainment and maximize suction lift. The pump should be mounted on a level, stable base to prevent vibration and ensure proper operation.

Nearby Obstructions and Drainage

Clear a 10-15 foot radius around the well casing of any obstructions, including nearby trees, buildings, or other water sources, to prevent potential interference with the pump’s operation. Ensure the surrounding area slopes away from the well to prevent water accumulation and reduce the risk of flooding. If the well is located in a low-lying area, consider installing a French drain or other drainage system to prevent water from entering the well casing.

Water Table Elevation Changes and Suction Lift

Monitor the water table elevation and consider installing a piezometer or other monitoring system to detect potential changes. Ensure the jet pump is designed to handle the maximum suction lift, typically around 25-30 feet, and is not subject to significant changes in water table elevation. If the water table elevation is expected to fluctuate significantly, consider installing a submersible pump or other pump type that is less susceptible to changes in water level.