Is water safe to drink in Japan and Korea?
The tap water in Japan and Korea is usually filtered and chemically treated for drinking, except for some water in restrooms (especially on trains), which is usually not intended for drinking (you usually see the sign posted in both Japanese/Korean and English, something like “Not for Drinking”). However, you may want to buy bottled water anyway because safe water doesn’t necessarily taste good and some people might be sensitive to chemicals used in tap water. There are a variety of brands sold all over Japan and Korea for as little as $1 or less.
