The Black Berkey Elements are a game-changer in the world of water filtration. Designed to tackle over 200 typical contaminants that can be present in tap water and raw freshwater sources like rivers and ponds, the Black Berkey Elements are the gold standard for clean, safe drinking water. Each pair of these elements lasts for up to 6,000 gallons, with each additional pair adding another 6,000 gallons of contaminant reduction to your system before replacement is needed. And with independent, third-party testing to back up their claims, you can trust that these elements are the real deal. Say goodbye to costly bottled water and hello to fresh, clean, and delicious water with Black Berkey Elements.