Most wells drilled in valley bottoms are adequate for a domestic supply. Fewer than half the wells drilled on hillsides are adequate for domestic supply, and wells on ridges yield smaller quantities of water. In the western quarter of the county, wells on hillsides commonly produce adequate water for domestic use, and half the wells on ridges yield enough water for a domestic supply. Deep wells penetrating sections of sandstone greater than 500 feet may yield enough water for small utilities or industrial supplies. Most water obtained from drilled wells is extremely hard and contains noticeable amounts of iron, except in the western quarter of the county, where the water is soft to moderately hard. Salty water may be found less than 100 feet below the level of the principal valley bottoms. A few springs supply enough water for domestic use. Most springs produce less than 5 gallons per minute.

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