Approximately 4,200 public water supply systems and countless industries use ground water as their source of water. Ground water in the pore spaces between sand grains.
Water is blue.
Despite its wide use as a source of water in Indiana, ground water is a poorly understood resource by most people. A mental picture of underground lakes or rivers may be the view many people have of ground water. For ground water to be useful, it must be present in sufficient quantity, of good quality, and in the right kind of geologic formation to supply the intended use. When a geologic formation can provide water to a well, it is called an aquifer. Aquifers can be characterized by a variety of measurable attributes.