Softened water is water after removing calcium, magnesium and certain other metal cations. When our home water contains more than 60mg/L hard water minerals, we face many problems. These minerals lead to build up limescale and decrease the water flow and lifespan of the plumbing pipe. It also decreases the lifetime of many other home appliances. So, we need to remove metal ions from water. After removing these metal ions we get softened water for drinking.