Question

why hard water is undesirable?​

Answer 1

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Hard water contains dissolved salts of calcium and magnesium. It gives poor lather with soap and hence is not intended to be used in laundries and in water boilers used in industries. ... Hard water is also responsible for the clogging of pipe lines.

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Answer 2

Answer:

Hard water is undesirable since it often has an unpleasant taste, interferes with the ability of soaps to dissolve (although some synthetic detergents dissolve well in hard water), and can cause scaling (the building up of insoluble precipitates) in pipes and hot water systems. ...