Various problems arise when certain metal ions such as calcium and magnesium are present in water, mainly bicarbonates, chlorides and sulfates. Hard water can build up limescale, foul piping and promote galvanic corrosion.In industrial-scale water softening plants, the waste stream from the reclamation process can create sediments and disrupt the waste system. There is a nature. The slippery feeling when using soap in soft water is caused by the fact that soap easily binds to oil on the surface of the skin, and simple dilution does not remove the soap molecules easily. In contrast, in areas of hard water, the rinse water contains calcium or magnesium ions that form insoluble salts, effectively removing soap residue from the skin, but also containing insoluble stearic acid, commonly referred to as soap scum. It can leave a coating on the surfaces of your tub or shower. If you don't like soft water and it's slimy or hard to remove soap, you can harden it with chemicals such as baking soda or calcium chloride, or add magnesium sulfate.

• Raw water will continue to get softened till the resin gets exhausted
• Softener resin is regenerated by sodium chloride