Well water is water that is sourced from underground aquifers. It is accessed by drilling a well into the ground, allowing the water to flow up through a pipe. This water is often used for drinking, irrigation, and household purposes, especially in rural areas where municipal water supply may not be available. The quality of well water can vary based on location and depth. It is important for users to regularly test their well water for contaminants such as bacteria, nitrates, and heavy metals. Proper maintenance and filtration systems can help ensure that the water remains safe for consumption and use.