Sparkling water ingredients (list)

 I love a good carbonated water, also known as "sparkling water". What are the most common ingredients in this drink?

List of ingredients:

1. Water (usually purified)
2. Carbonation (carbon dioxide)
3. Minerals (sodium citrate, potassium sulfate, or sodium bicarbonate)
4. Flavoring (usually citric acid or some kind of fruit flavor)

A glass of sparkling water on a table.

This is a very popular beverage and is drunk by millions of people who want something healthier than soda (soft drinks).