The water softener works on Ion Exchange principle and is used along with Quartz or Glass Distillers. The water softener prevents accumulation of sludge (i.e. deposits of Calcium and Magnesium salts) which renders hardness to water. The tap water is fed at the inlet, and the softened water is drawn at the outlet. The softened water is fed into the boiler of the distillation unit. The unit can be recharged again with a saturated solution of Sodium Chloride. The unit delivers approximately 1000 ltrs of soft water for one cycle of regeneration.

During regeneration 20 Ltrs. of Sodium Chloride solution is passed through the water softener slowly for a period of one hour.