BRITA specialises in water filters and products that purify water for home consumption. Tap water, whilst safe, may contain substances, which affect its taste and odour. These substances include chlorine, organic impurities and certain pesticides. The BRITA water filter reduces these substances, and also heavy metals like lead and copper. The taste and appearance of hot and cold drinks are improved through filtration. BRITA is also ideal for use in cooking and food preparation. Temporary water hardness - the cause of limescale, as often seen in kettles, is also reduced by Brita water filters.