A borehole is a narrow, deep hole drilled into the ground to access underground resources such as water, oil, or minerals. It is typically created using specialized drilling equipment and can vary in depth and diameter depending on its purpose. Boreholes are essential for groundwater extraction, environmental monitoring, and geological studies. In the context of water supply, boreholes are often used to reach aquifers, which are underground layers of water-bearing rock. Once a borehole is established, it can be fitted with a pump to bring water to the surface for various uses, including agriculture, drinking, and industrial processes.