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See also: Water softening. Soft water is surface water that contains low concentrations of ions and in particular is low in ions of calcium and magnesium. Soft water naturally occurs where rainfall and the drainage basin of rivers are formed of hard, impervious and calcium poor rocks.ecause soft water has few calcium ions, there is no inhibition of the action of soaps and no soap scum is formed in normal washing. Similarly, soft water produces no calcium deposits in water heating systems. Water that is not soft is referred to as hard water.
Brilliant transforms the water in your home. Diamond CrystalÂ® Water Softener Salt makes it easy for you to transform hard water to soft. When used in your water softener, our water softener salt helps remove minerals from your hard water, including iron, calcium, magnesium, and even barium. These hard water minerals are removed when water passes through resin beads in the water softener tank.