A Brita water filtration system is a plastic pitcher that is divided into top and bottom compartments. These two compartments are separated by a filter. Water is poured into the top reservoir and percolates through the filter into the bottom reservoir.
Activated charcoal is the main filtration component of the Brita filter. Chlorine, pesticides and organic impurities adhere to the charcoal, which eliminates foul tastes and odors from the water. In addition, an inhibitor is added to prevent the growth of bacteria.
Ion Exchange Resin
The ion exchange resin removes calcium carbonate, which causes "hard water" and limescale. Heavy metals, such as lead and copper, are also removed by the resin.
A fine mesh screen sits at the top of the filter opening to block any coarse material from entering the filter. Another mesh screen is located on the bottom and is used to keep the components of the filter in its plastic casing.