Areas with complex geology can produce varying degrees of hardness of water over short distances.
2.
The hardness of water may be altered or treated by using a chemical ion exchange system.
3.
The hardness of water also affects its pH balance which plays a critical role in food processing.
4.
In North America, the hardness of water is often measured in grains per US gallon ( gpg ) of calcium carbonate equivalents.
5.
Tea regions were famous for producing teas with characteristic compositions of the five taste elements : Jeju island, contemporarily, has teas with more salt in them due to ocean winds; other elements are brought out by different means of cooking the leaves, or hardness of water.
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