This edition of RockTalk discusses the ways in which geology can determine water quality. Digital PDF download. RT-03-02D
Excerpt from this publication:
Geology and Water Quality
Fortunately, Colorado is blessed with large supplies of clean water, much of it in the form of snowmelt runoff from the Rocky Mountains. As the snowmelt and rain enter streams and percolate into the ground to replenish ground water aquifers, the water flows over and through various kinds of rock. This interaction changes the composition of the water.