San Pellegrino water is not naturally carbonated; it undergoes a carbonation process after being bottled. The water originates from the San Pellegrino Terme area in Italy, where it is sourced from a natural spring. This spring water is celebrated for its unique mineral composition, which contributes to its distinct taste and properties. While the carbon dioxide present in the water is naturally occurring in the spring itself, the sparkling quality that consumers enjoy is achieved through the controlled addition of carbonation during the bottling process. This ensures a consistent effervescence in each bottle of San Pellegrino. For more detailed information about the water and its carbonation process, individuals may find it helpful to visit the official San Pellegrino website, where additional insights can often be found.