GREAT TASTING: Great tasting water for the whole family, this Drinking Water Filter Removes the Suspended Solids, Cloudiness, Parasites and Pathogenic Bacteria NSF: Certified by NSF to NSF/ANSI 42 and 53 standards SUBSTAINABLE: Ceramic is 100% natural, 80% less plastic waste than other available synthetic cartridge filters. UNIQUE CERAMIC: Replacement Water Filter Cartridge Candles - 12 Months BPA free Long Life ceramic. Filters are self sterilizing and re-cleanable. Our unique ceramic has BioTect protection that prevents bacteria growing on or through it FILTERING WATER SINCE 1826: For almost 200 years Doulton has continuously technically improved our water filters. We proudly export water filters from the UK to over 140 countries globally, saving thousands of lives every year. Made from sustainable natural materials, our ceramic filters provide up to 99.9999% filtration of bacteria. Our filters have been tested to effectively reduce over 230 containments including sediment, chlorine, heavy metals (including lead), microplastics and many more.