"Soda water and sparkling water contain the same ingredients - water mixed with sodium bicarbonate (碳酸情呐); however,soda water's sodium bicarbonate is artificially added,whereas sparkling water naturally contains sodium bicarbonate." Since 苏打水的碳酸情呐 is artificially added,we call it soda water.The Chinese characters "苏打" (pronounced like su-da) is actually derived from the English word "soda".