Bottled Water (Passover) Status: Is bottled water acceptable for Pesach without special certification? If it is just plain, uncarbonated water, then it can be used without Pesach certification. The same is true if it also contains minerals such as calcium chloride, magnesium chloride, magnesium oxide, magnesium sulfate, potassium bicarbonate, potassium chloride, sodium bicarbonate, or sodium chloride. If it contains vitamins and/or citrates (e.g., calcium citrate), then it should only be used if certified as kosher for Pesach.