iSpring WCS50KG 48,000 Grain Whole-House Water Softener

The iSpring WCS50KG is a 48,000-grain whole-house salt-based ion-exchange water softener designed as the upstream treatment component in an iSpring two-stage water quality system. The 1.5 cubic foot high-capacity cation exchange resin reduces hardness to 0-1 GPG and removes up to 3 PPM clear water iron. The digital demand-initiated control valve (Fleck-compatible platform) monitors cumulative water volume and initiates overnight regeneration before capacity exhaustion. A 250-lb brine tank and 3-valve bypass assembly are included. The system pairs naturally with the iSpring RCC7 5-stage reverse osmosis system under the kitchen sink: the whole-house softener protects plumbing and extends RO membrane life, while the RO system removes the residual sodium added by softening. iSpring markets this combination as the benchmark residential water quality solution for hard water households.