Artesian springs occur when groundwater is trapped between layers of impermeable rock or clay. When pressure builds up, the water can rise to the surface naturally, creating a spring. This process often results in a continuous flow of water without the need for pumping. These springs are named after the region of Artois in France, where they were first studied. Artesian wells can also be drilled to access this pressurized water, making them valuable sources of fresh water in many areas. The water from artesian springs is typically clean and can be used for drinking and irrigation.