92.31% carbonated water

there is no sodium in carbonated water

Water is not carbonated, sparkling water is carbonated.

Generally speaking, carbonated water is just as hydrating as non-carbonated water. Most carbonated water contains no additives (other than the carbon dioxide). However, some carbonated water contains additives. One of the more common additives to carbonated water is sodium chloride (table salt). Depending upon the amount of sodium in the carbonated water, and your body's sodium levels, the carbonated water could be more or less hydrating than the non-carbonated variety. The addition of the carbon dioxide has no effect on the hydrating power of the water.

Carbonated water has carbon dioxide under pressure added to the water. Sparkling water may be naturally carbonated.