The artesian springs, which are located in Eldorado Springs, flow from a unique geologic source. The spring water originates as rain and snow just east of the Continental Divide. There it enters an aquifer and flows underground heading east. The aquifer passes underneath Eldorado Springs and intersects with the Lyons Sandstone Formation. These sandstones are old sand dunes which were pushed up vertically during the formation of the Rocky Mountains. An immense artesian pressure forces the water up through the sandstone to the surface in Eldorado Springs, naturally filtering it. It is estimated to take many years to complete this entire circulation process, and you can be assured the water contains no "man made" pollutants. Protecting the source from all other ground waters is a 500 foot thick layer of clay known as Lykin's Layer which is just above the sandstone and is impervious to water. Furthermore, Eldorado Springs is surrounded by hundreds of acres of local, federal, and state park land. All these factors contribute in the natural production of Eldorado Artesian Spring Water a water renowned as a pure natural spring.
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