Soda water is known by many names like Club soda, Sparkling water, Carbonated water. Soda water was available only from natural soda springs and used to produce a variety of health tonics. It is regular water that has carbon dioxide pumped into it. From soda water we of course get flavored and sweetened soda and a number of mixed alcoholic drinks. Soda water in all of its is completely low carb. There are no carbs at all in water. There are no carbs in carbon dioxide.

Carbon dioxide is just as gas, in fact the gas you breathe out of your body. You breathe in Oxygen and breathe out carbon dioxide. Club soda and soda water are almost identical. Sometimes club soda is just another name of soda. The two are interchanged in drinks all the time.