Always be ready for any number of guests with the Culligan ZeroWater 52 Cup Ready-Read 5-stage Water Filtration Dispenser, boasting our highest capacity. Its ample volume guarantees an abundance of pure-tasting water, courtesy of two 5-stage water filters removing 99.6% of total dissolved solids (TDS). Culligan ZeroWater is IAPMO-certified to reduce lead, the forever chemicals PFOA/PFOS, chromium, and mercury giving you peace of mind that every glass you pour for you and your family will be healthier and cleaner. Featuring Ready-Read Technology, enjoy instant TDS readouts with the detachable TDS meter for peace of mind as filtered water flows through the device's body and the dispenser.