A set of activated charcoal water filters that work with coffee machine model KCM511 KCM514 KCM515 KCM534. Filter is designed to replace part KCM5WFP. It helps removing up to 82% of the chlorine and other impurities found in tap water. It's been proved to improve the taste of the water and coffee. These filters have been approved and certified by FDA and European ROHS. We suggest to replace the filter for every 2 months to maintain a good taste of water.