To enjoy healthier, great-tasting water for pennies per gallon, change your water filter regularly. Bpa-free brita advanced replacement filters fit all brita pitchers and dispensers. They reduce zinc, chlorine taste and odor, copper, mercury and cadmium, all of which may be in tap water. You can replace them easily and quickly without presoaking, and they leave no black flecks in your water. For optimum performance, change your water filter every 40 gallons, or approximately every two months. One water filter can replace up to 300 standard 16.9-ounce water bottles, cutting down on plastic waste and saving you money. Water filters type: pitcher filter; for use with: brita pitchers and dispensers; quantity: 3 per pack.