Water served in restaurants and hotels is perfectly safe; so is tap water and water from drinking fountain unless labelled EAU NON POTABLE (water not for drinking).
220 volt AC (50 to 60 Htz).
2 pin type E sockets are normally used, these will also accept type
C and F plugs. Occasionally in older properties 3 round pin sockets
are used.
Adaptors are available from most electrical shops in UK.