National Water-Quality Assessment (NAWQA) Program

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Quality of Water from Domestic Wells in the United States

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Hardness is a property of water that is not a health concern, but it can be a nuisance. Hard water can cause mineral buildup in plumbing, fixtures, and water heaters, and poor performance of soaps and detergents. Hard water was prevalent in the east-central and western United States, reflecting the distribution of carbonate aquifers and aquifers with relatively high concentrations of dissolved solids. >, greater than; <, less than or equal to.

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Page Last Modified: Tuesday, 04-Mar-2014 14:45:18 EST