If you are new to a more natural lifestyle, natural products, etc. This website provides simple steps and resources to take when starting down this path. In addition, you can purchase a book from this website regarding similar information.
Water Filtration Different types of filtration and the below site provides helpful information.This site lists and explains different types of water filtration, pros and cons, etc. On the bottom left hand corner they list a recommended product, if you access that site they have a product comparison chart. http://www.historyofwaterfilters.com/