S parkling water . Sparkling water contains carbon dioxide, either present naturally or added to the water. Examples include seltzer water and club soda. Spring water . Spring water comes from a natural spring, such as an artesian well.
Carbonation can be natural or from the addition of carbon dioxide.
If carbon dioxide is added, it must come from a natural source if the word natural is on the label. Mineral water . Mineral water usually contains high amounts of dissolved mineral salts, such as sodium, calcium, magnesium, and iron salts. All waters have some minerals unless they are distilled. Some commercial mineral waters consist of tap water to which minerals and carbon dioxide have been added.