"Other"
As I dont like water to drink unless its got something else in it. Only time I will drink it is when I am cycling and I have my "Camelback" piping water into my gob - if I dont drink on the bike, then I will seize up; just like any serious cyclist.
The other time I will only drink it is on hoilday. Usually Greece,as its not recommended to drink the tap water there.
Oh and theres water with ale in it, of course
AF