The Sport Berkey Replacement Filter Eliminates or Reduces up to 99.9% of: Unpleasant taste and odors, cloudiness, silt, sediment and chlorine. Toxic chemicals: Trihalomethanes, VOCs, detergents, pesticides, etc. Harmful microscopic pathogens: Cryptosporidium, Giardia, E-coli >99.99999% and other pathogenic bacteria. Heavy metals: Aluminum, Cadmium, Chromium, Copper, Lead, and Mercury. Radiologicals: Radon 222.