Sparkling water is spring water that contains carbon dioxide gas. Drinking water is water that has probably been drawn from a municipal system. If the water comes right out of the tap and into the bottle or jug, the label has to disclose which municipality it came from. That's why you won't find any mention on bottles of Pepsico's Aquafina or Coca-Cola's Dasani that both originate from city water supplies. Purified water has been treated with distillation, ion-exchange, reverse osmosis, or another similar process.
Distilled water comes from the steam of municipal water that has been boiled.
Short of testing it yourself, there's no way to guarantee that your bottled water is free of contaminants. Their plants are open to unannounced inspections by NSF International, an independent certification agency . Top A lot can happen on the way to the tap or bottle. Water can pick up healthy minerals like magnesium and calcium as it travels through rock formations. It can become laced with pesticides that are washed into rivers and streams.