Natural minerals carbonate AQUA Carpatica’s sparkling water the only nitrate free, digestion stimulating, naturally sparkling water on Earth. AQUA Carpatica spring water is exceptionally low in nitrates. Both waters are sodium-free, making a great choice for those on a low-sodium diet or those with high blood pressure. Due to the nitrate free and exceptionally low nitrate content of both varietals, AQUA Carpatica is the best choice for prenatal and newborn care.