Sand and sediment in your water is OK if you are taking it with Whisky as those additives improve the taste.  ;D ;D You would never of course add water or anything else for that matter to single malt as those men of pending independence will have you strung up if they witness said event.  >:(  However they are allowed to freeze our favourite snack cover it in revolting batter and deep fry it......Ahhhh A Mars it isn't.