Water well drilling is the process of creating a hole in the ground to access underground water sources. This is typically done using specialized equipment that can penetrate various soil and rock layers. The depth of the well depends on the location and the water table, which is the level below which the ground is saturated with water. Once the drilling is complete, a well casing is often installed to prevent the walls from collapsing and to keep contaminants out. After the well is finished, a pump may be added to bring the water to the surface for use in homes, farms, or businesses.