Purpose of water softeners
Water is said to be hard when it is full of dissolved minerals. Hardness in water interferes with the action of soap and detergents. Water softeners remove the hardness of water by using an expensive process called ion-exchange which replaces minerals such as calcium and magnesium with sodium or potassium.
They remove the minerals which makes water “hard”. All the same softened water is not necessarily improved for drinking. In fact, softened water is less desirable because of the addition of sodium. Individuals with heart disease, high blood pressure are usually cautioned against adding an additional source of sodium to their diet and therefore should avoid using water that has been softened by such a system.
But if you do need to look into the area of water softeners, buying the right product is what really matters.