we find it ok for teeth brushing and making a brew,but it does taste a bit different
however,i have got to say that a change of water in this country puts my tum off,so i tend to either-buy water and keep in the fridge or buy steratabs from the uk chemist and then decant into bottles for the fridge
my other tip is put some plastic bottles of water in the freezer(only fill to 2/3 to allow for expansion)then if you go on a walk,take a cold one and a couple of frozen ones and hey presto-chilled water,hours after you have set off!!!
its safe enough for the corfiots to drink-but they are used to the different mineral content(bit like different areas in the uk)so just be a bit cautious-not because of cleanliness,just because your not used to it
have a lovely time!!