The spear point dewatering process is a technique used to lower groundwater levels and control water seepage on construction sites, excavations, or other areas where groundwater poses a challenge. It involves the installation of a series of spear points which act as temporary drainage system to remove water from the ground.

Once spear points are installed, they are connected to a header pipe usually situated at ground level. This header pipe collects the water and transports it to a dewatering vacuum pump. The pump creates a pressure differential that draws the groundwater into the spear points and throughout the header pipe network. The extracted water is then discharged to a sediment tank and directed through a Magnetic flow meter and discharge to sewer point via trade waste agreement.