Brita filters contain activated carbon, anion and cation exchange resins and colloidal silver. They will, therefore, remove much of the chlorine, chloramine and other organics as well as everything else. What comes out of a Brita is very low ion water up to the point where the exchange resins are depleted. Tiny amounts of silver are added to keep the water sanitized. At least that's the way they used to work. I haven't analyzed the water from one in years.