We like that this 1 from Pur is surely an NSF Accredited filter, so we can ensure that This is a dependable solution that removes the contaminants it states it does. 1 micron filter Disadvantages: Doesn't remove viruses Not recommended for Worldwide vacation Is not going to filter chemicals or https://alkaline-water-bottle54310.azzablog.com/18648131/everything-about-hard-water-shower-filter