1 Filter is Included in the Package. Search "wd-pf-01a Plus" for Replacement Filters. Effective filtration: Using 7-stage water filter technology, the Waterdrop water filter pitcher tests water to eliminate as many impurities as possible. It can reduce the amount of heavy metals, such as arsenic, as well as fluoride, chlorine, and bad taste and odor. Drink more water every day with Waterdrop. Small-capacity pitcher to meet multiple needs: The product has a 5-cup capacity and its small size makes it easy to carry. This pitcher is colorful and perfect for use in dormitories and offices. Use our pitcher to filter impurities out of your water. Gravity induction indicator: The pitcher contains a indicator that lets you know when it's time to replace the filter. In addition, while pouring your water, you can check on the use status of the filter.