Water. Japan's tap water is drinkable. You can safely drink water inside, outside, in parks and from taps in public stations. Bottled water is available for purchase at vending machines and convenience stores.
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Yes, drinking water from taps in Japan is safe. For environmental reasons, try to use a refillable water bottle rather than buying bottled water in Japan. Metro train stations have public water fountains, but otherwise these can be hard to find (this is the land of vending machines after all).
Finland. Finland, known as the country with the cleanest tap water, boasts 168,000 lakes and 647 rivers, out of which a staggering 85% have been deemed to have high-quality water.
Tipping in Japan is not expected, and attempts to leave a tip will almost certainly be turned down (a potentially awkward moment). In Japan, it's thought that by dining out or drinking at a bar, you are already paying the establishment for good service.
When travelling in Japan, a person will likely come across many of the following banknotes: 1,000 yen – This roughly equates to an American $10 bill and is the lowest value of any Japanese banknote in circulation. This bill is typically used by office workers to pay for lunch.
One of the easiest ways to request water is by calling the front desk. Most hotels have a dedicated phone number that connects you directly to the front desk. Simply pick up the phone in your room, dial the number, and politely ask the staff for a glass of water.
By the time water reaches boiling point the threat from waterborne pathogens is eliminated and the water is safe to drink. The US Centres for Disease Control recommends boiling for one minute.