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hard water
noun
- water that contains magnesium, calcium, or iron salts and therefore forms a soap lather with difficulty.
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Notes
Hard water is usually associated with well water in regions where the rocks contain a large proportion of iron-bearing minerals .
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Example Sentences
Severne arose in a cold room, washed his face in hard water, and descended to breakfast.
From Project Gutenberg
Most of the water thus obtained is hard water, from its limestone qualities, but it is most unquestionably healthy.
From Project Gutenberg
Hard water frequently becomes softer after it has been boiled for some time.
From Project Gutenberg
Seeing then the disadvantages attendant on the use of hard water, it remains to be considered how best to soften it.
From Project Gutenberg
Hard water decomposes soap, and cannot be efficiently used for washing.
From Project Gutenberg
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