A "well system" refers to a method of extracting groundwater from underground aquifers using a well. This system typically consists of a drilled hole, a pump, and piping that transports the water to the surface for various uses, such as drinking, irrigation, or industrial processes. Well systems can vary in design, depending on factors like the depth of the water table and the volume of water needed. They are essential for providing a reliable water supply in areas where surface water is scarce or contaminated, ensuring access to clean water for communities and agriculture.