From: doultonusa.com
Doulton brand water filters and various grades of ceramic candles and cartridges are manufactured in an accredited ISO 9000 facility in the United Kingdom. We offer a wide range of Doulton point-of-use (POU) drinking water systems for residential use, as well as portable gravity water filters. In addition, they offer a wide range of commercial and specific water filtration application systems, using Doulton ceramic cartridges and or other technologies' media cartridges.
Doulton Ceramic Filter Elements have been trusted by relief organizations around the globe for over 150 years. These filters were developed in the 1850's to remove disease causing bacteria from London's Thames River.