Hardness of Water is not ...

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Hardness of Water is not strictly a water safety concern. It is one of the aesthetic characteristics of Water and as colleagues have discussed below Calcium and Magnesium are not considered toxic at the concentrations normally experienced in drinking water. High hardness impacts the ability of soap to lather and therefore May have an impact on cleaning. Also high concentrations of these elements together with carbonate will lead to scaling in Water cooling systems and domestic water heating devices including to kitchen kettle.