Any addition of sweetening agents or flavoring — including natural fruit essences, electrolyte flavors, or sweeteners — removes the product from 2201 and places it under the heading for sweetened or flavored waters and non-alcoholic beverages. Plain mineral water with naturally occurring minerals from the source retains its 2201 classification because those minerals are not 'added' in the trade sense.

FDA's Standards of Identity define specific terms such as 'mineral water,' 'spring water,' and 'sparkling water,' each with compositional requirements. Imported bottled water must be labeled consistently with the applicable standard — for example, 'mineral water' must contain a minimum level of dissolved minerals from a protected underground source. Mislabeled water can be detained or refused entry, so label review before shipment is essential.