| − | An '''Aquifier''' is an underground rocky body through which groundwater can easily percolate and possessing enough of a porous nature to supply wells. [[Sandstone]]s, gravel beds, and [[limestone]]s make good aquifiers. | + | An '''aquifier''' is an underground rocky body through which groundwater can easily percolate and possessing enough of a porous nature to supply wells. [[Sandstone]]s, gravel beds, and [[limestone]]s make good aquifiers. |