Introducing the world's most powerful and cost-effective personal water purification systems: Berkey Systems. Designed to purify both treated and untreated water sources, this system is perfect for everyday use and a must-have for hostile environments. The Black Berkey Purification Elements are more powerful than any other gravity filter element available and can remove over 200 contaminants from tap water or raw freshwater sources like rivers and ponds. They're so powerful, they even remove red food coloring without stripping your body of beneficial minerals. Each pair of Black Berkey Purification Elements lasts up to 6,000 gallons before needing replacement, making them both economical and long-lasting. These elements are not for use with saltwater sources or softened water. Backed by independent testing, Berkey Systems are the ultimate solution for reliable and user-friendly . Made and assembled in the USA, get yours today and experience the best in water purification technology.