The Black Berkey Elements are a game-changer in water filtration, with the ability to address over 200 typical contaminants that could be lurking in your tap water or raw freshwater sources. These powerful filters last for up to 6,000 gallons and are backed by independent third-party testing, so you can be confident in the quality and effectiveness of your water purification system. For even greater peace of mind, the Berkey PF-2 Fluoride and Arsenic Reduction Elements work alongside the Black Berkey Elements to adsorb fluoride, arsenic, and other heavy metals. Make a wise investment in your health and the environment with Berkey Water Systems.