Your Brita pitcher and dispenser filter helps reduce the amount of chlorine, copper, cadmium and mercury all of which may be found in tap water. Our replacement filters reduce many of the undesired extras that come out of your tap. Our redesigned filters no longer require pre-soak, and won't leave black flecks in your water. These filters are compatible with all Brita pitchers and dispensers. Replace every 151.4ls or every two months for best results.