Sodium bicarbonate is an inorganic compound composed of sodium and bicarbonate. It’s sometimes referred to as “baking soda” because, in larger quantities, it’s a common ingredient in bakery products. At a much smaller level, sodium bicarbonate is naturally found in most spring and mineral waters, and we chose to include the minerals we add to our Pure Life® Purified Water to create a clean, refreshing, smooth taste. All of the minerals we add to Pure Life® Purified Water are high purity inorganic ingredients obtained through manufacturing processes from natural materials.