Testing the differences between bottled waters is much like discerning the subtleties of shades of grey: it's way more masochistic than sexy. But while the variation from one to another might not be as pronounced as those in the realms of mac and cheese or frozen pizza, distinct differences do exist.
As proof, every year a group of water professionals meet in Berkeley, CA to judge over 100 waters, and crown superlatives like best municipal water, which can be found in Emporia, Kansas. Don't move there yet, keep reading! Although we don't have access to any water sommeliers, we did have five friends who blindly tasted eight of the biggest bottled waters around: Aquafina, Evian, Mountain Valley, smartwater, Fiji, Dasani, Voss, and Pure Life. (Coca-Cola and pretzels were used to help dirty/clean the palates of the tasters.)