Freezing mineral water?!
Answers: What would happen to mineral water if you freeze it?
When mineral water approaches its freezing point, some of the minerals start to precipitate, leaving more pure water to freeze first. The more dense part freezes and thaws slightly slower causing even more precipitation.
So, it causes you to get gritty mineral deposits floating in the bottom.
??it turns to ice,,,, end of story??
I think if you freeze it and then thaw it out again it won't taste the same, so they warn you not to freeze it.
Either that or they're afraid the bottle will break when it freezes.