BWT’s AQUAlizer Filter Jug contains two replaceable filters which removes calcium and unwanted particles such as lead, chlorine, copper from the water. The new function indicates when it is time to change the filter in the jug which can contain 2,6 litres of water and filter up to 120 litres of water. The filter jug enhances your water for espresso with its unique technology which not only cleans the water but also adds magnesium to enrich the natural aromatics and taste.