Brita Pitcher Replacement Filter (3 Pitcher Filters). Reduces Chlorine, taste and odor, Mercury, Copper and more. The Brita Pitcher reduce the harmful contaminants that may be in your tap water. Keeps a healthy level of fluoride and water additive that promotes strong teeth. For clean and safe drinking water, just replace the Brita every 40 gallons or every 2 months. Filter replacement is essential for product to perform as represented.