Perhaps people are familiar with terms such as "hard water" and "soft water". They may be wondering, though, what makes water hard or soft and which of the two are healthier and safer to drink.
It is typical of water to be crystal clear however; it contains some minerals and chemicals. The concentration of some specific minerals causes it to become hard.
Here are the differences between "hard water" and "soft water" plus the advantages and disadvantages of each as well as more information about softening.
The Difference between Hard and Soft Water