Asia · Last reviewed 2026-04-29

Can I drink tap water in
Japan?

💧Safe to drink

Tap water in Japan is safe to drink everywhere — quality is among the highest in the world and many fountains and cafés serve tap water by default.

At a glance

What's safe in Japan

💧

Drink tap water

Yes

🪥

Brush teeth

Yes

🧊

Ice in drinks

Yes

In more detail

What you should know

Regional variation

Hokkaido, Tokyo, Kyoto, and Osaka all have famously good tap water. Mountain ryokans sometimes serve spring water by preference, but tap is fine.

Traveller notes

Practical water tips for Japan

Restaurant water, hotel bathroom cold taps, station fountains, and airport refill points are generally safe.

Older accommodation may have a stronger chlorine taste, but that is not a safety issue.

Cold tap water is the right choice for drinking; hot taps may run through building heating systems.

Practical advice

How to stay hydrated safely

Drink the tap

Tap water in Japan is treated to a high standard. Carry a reusable bottle and refill from public fountains and cafés where available.

Public fountains are usually drinkable

Look for "drinking water" or "potable" signs. Many European cities have free public fountains explicitly designed for drinking.

After heavy rain or floods, check local advisories

Even in safe-water countries, supply can be temporarily contaminated by storms or maintenance. Local news will flag boil-water notices when they apply.

Some buildings still have old plumbing

In older accommodation, run the cold tap for 20 seconds before drinking — particularly in the morning. This flushes any water that has sat in pipes overnight.

FAQ

Japan tap water · questions

Can I drink tap water in Japan?

Tap water in Japan is safe to drink everywhere — quality is among the highest in the world and many fountains and cafés serve tap water by default.

Is it safe to brush my teeth with tap water in Japan?

Yes — brushing teeth with tap water in Japan is generally safe.

Is ice safe in restaurants in Japan?

Yes — ice in Japan is generally made from safe tap water and fine to consume.

What about hot drinks like coffee and tea in Japan?

Boiling water for at least one minute kills most pathogens, so hot tea and coffee made from properly boiled water are generally safe even where tap water isn’t. Be cautious of warm drinks that may not have been brought to a full boil.

Should I bring a water filter to Japan?

Not necessary — tap water in Japan is safe to drink. A reusable bottle is enough.

When was this guidance last reviewed?

Last reviewed 2026-04-29. Tap water conditions can change after major infrastructure events or boil-water notices — always check the latest official sources before travelling.

Sources

Disclaimer: This is general traveller guidance for Japan, not medical advice. Conditions change after infrastructure incidents or boil-water notices — always check official sources before drinking. Last reviewed 2026-04-29.

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Can I drink tap water in
Japan?

What's safe in Japan

What you should know

Practical water tips for Japan