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Q. Is bottled water acceptable for Pesach without special certification?
A. Yes, and this is true even if the water also contains minerals such as calcium chloride, magnesium chloride, magnesium oxide, magnesium sulfate, potassium bicarbonate, potassium chloride, sodium bicarbonate, or sodium chloride. But if it contains vitamins and/or citrates (e.g., calcium citrate), then it should only be used if certified as kosher for Pesach.