The original source of all the water we use is rain which is itself soft. However, once the rain falls to earth it runs through the rock strain and dissolves from it metal salts such as those of Calcium and Magnesium. In many areas of Britain the water coming from the mains or a borehole is a solution of these salts. This is called HARD WATER because of the hard deposits caused in water systems when the salts come back out of solution like a rock turning back to rock. Soap and hard water do not go well together. More soap is needed to create a lather and a soap scum is often seen. By using a water softener soaps and detergent use is much less to get the desired effect.
photo shows a duplex water softening plant which is part of a full water treatment package which was installed commissioned and is now on a bimonthly service contract with cedek.