About British Berkefeld® and Doulton® Gravity Water Filter Systems
British Berkefeld® and Doulton® gravity filtration systems use NSF-certified Ultra Sterasyl® and Ultra Fluoride® filter technology. Certified to NSF/ANSI Standards 42, 53, 372, and 401, they are the only gravity-fed water filters independently certified to reduce a wide range of contaminants, including 99.9% of bacteria, chlorine, chloramines, pharmaceuticals, PFAS, pesticides, heavy metals, microplastics, hormones, and more.
With over two centuries of British engineering and manufacturing expertise, Doulton® ceramic filtration technology has become one of the most trusted names in water filtration worldwide. Their gravity systems require no electricity, are simple to maintain, and provide reliable access to safer drinking water wherever you need it.