ZeroWater ZD-030RP Ready-Pour Water Dispenser, Blue, 30-CupZeroWater's 30 Cup Ready Pour dispenser is the largest capacity filtered dispenser on the market today. The dispenser body holds 23 cups of the purest tasting filtered water while an additional 7 cups of unfiltered water is kept in reserve waiting to be filtered. As you dispense the filtered water from the spigot, the unfiltered water in the reservoir makes its way through the 5 stage Ion Exchange filter delivering a continuous flow of filtered water.