That's easy, 7/11's are everywhere so just drop in and price a liter of water. If it works out to .30 then use tap water for bathing and stick to drinking bottled water. At a 7/11 here in Tokyo I saw 1.5 liters of water for sale for nearly $4. In Bangkok bottled water is cheap and there are lots of things to do in Bangkok but drinking water from the tap isn't one of them. In Tokyo I drink water straight from the tap, it's delicious.
This method had also guided me to drink tap water in Hong Kong, Taipei and Singapore.
This method had also guided me to drink tap water in Hong Kong, Taipei and Singapore.
