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Taste is another major difference between bottled water and tap water.
It seems that all water is not created equal. And bottled water has such a wide variety of labels that it's hard to decipher what it all means. Mineral water is distinguished from other types of bottled water by its constant level and relative proportions of mineral and trace elements. No minerals can be added. Spring water must be collected only at the spring or through a bore hole tapping the underground formation finding the spring.