A short and simplified answer to a complicated question:
Natural mineral water
Natural mineral water is water from a geographically and clearly localized spring which fulfils legal requirements concerning mineral content and composition (for example, Perrier or Vittel).
In the United States, spring water is bottled water which may be blended from various springs (as in our film, for example, Poland Spring in the state of Maine). However, it does not qualify as natural or classic mineral water.
In European Union countries bottled water defined as spring water must be filled direct from the source. However less stringent legal requirements apply concerning the mineral composition.
Bottled water companies like Nestlé, Coca Cola or Pepsi Cola often pump water from normal groundwater or buy it from public drinking water supply systems (in our film, for example, Nestlé Pure Life).