Minerals in water do two things: They make it taste better, and they make it healthier. Your body needs calcium, phosphorus, magnesium, and other elements, and mineral water provides them. These minerals are also what gives water that great “clean” taste.Per the U.S. Food & Drug Administration, water labeled as mineral water must have at least 250 parts per million of minerals and trace elements at its natural source. Minerals must be naturally occurring and none may be added to the water.Many mineral waters are carbonated. Some are naturally carbonated (although that carbonization may be removed for purifying purposes, and then added back during the bottling process) while others are not.