Grayson County waterways Map Mineral Water Mineral Water Jacob's Well, Denison, Texas Big Mineral Springs Artesian Wells : An artesian well is a pumpless water source that uses pipes to allow underground water that is under pressure to rise to the surface. This type of well seems to defy gravity
because the pressure that builds up between layers of rock gets
relieved when the water finds a path to the open air. In addition, the
water has been naturally filtered because it passes through porous rock
as it seeps into the Earth to reach the aquifer, which is the underground water source. For centuries, people have drilled artesian wells to drink filtered water that doesn't need to be manually or mechanically hauled up from the depths. ("What is an Artesian Well". Wisegeek : clear answers for common questions, 13 July 2013)
- Water flows from a higher elevation through a porous, rocky surface
and rises to the surface because of pressure between the rock layers.