The S4 is the first of its kind, a sparkling water unit with the same state-of-the-art Wellsys technology. The S4 uses lead reduction carbon filtration to ensure crisp, clean water each time. Its comfort-height and touch activated design offer no hassle dispensing. The sleek glass front panel and single point of dispense provide a clean look. The S4 water cooler provides exceptional quality and warranty to match.