https://berkeywaterfilter.us/i....mperial-berkey-water Always Make Sure You and Your Family Have Access to Clean Safe Drinking Water Anywhere or during any emergency! Imperial Berkeys are the #1 bestselling large-size portable water filter in the U.S., they are big brother or sister to the Big Berkey Water Filter. It Removes parasites, pathogens, chemicals and even fluoride. Should be in every prepper's emergency kit. I am so glad to have mine (with fluoride filters) as I would never want to depend on our Gov for clean water! #berkey #waterfilter #waterpurifier #imperialberkey