Ive read a few reviews about the product, ie the Bisleri mineral water, and would like to add that I think that it is quite safe and hygeinic.
It is easily available at most places, and is safe as long as you make sure that the seal-like-thing is on. The water is also not very expensive(altho water is not meant to be expensive atall, lemme leave that for another day...)
Now that, Ivew said what I have to say, MS.com says that the review cant be less than 100 words, so here I am typing a few lines more :)