When encountering a modern drilled well, the inner workings of the well are not obvious. Perhaps this is because the image of the modern drilled well breaks with what we imagine a well to be, which is closer to older dug wells, holes in the ground in which you can retrieve the water, even seeing it from the surface, as you can see in the image above. These dug wells are a kind of window into the underground, allowing us to look down and actually see groundwater. But with a drilled well, this window is covered. A pipe descends down into the ground, to a depth not accessible to the human eye.
Wells comprise a system through which the aquifer can be reached in physical terms, from the surface, and used for the extraction of water that is in turn distributed for different surface uses.
