Is the water in Japan safe to drink or should we buy bottled water?

Conclusion

Yes — tap water in Japan is very safe to drink.
Thanks to its clean environment and high standards, you don’t need to buy bottled water unless you prefer to 🚰🇯🇵

General Information

Japan has abundant rainfall, clean mountains, and strict water treatment systems.
As a result, you can drink tap water almost anywhere in the country, including in big cities, hotels, restaurants, and public places.

Many visitors are surprised to learn that:

• Japan’s tap water is one of the safest in the world
• It is soft water, meaning it feels light and smooth — unlike the hard water found in many parts of Europe
• It’s regularly tested and controlled by strict government regulations

💡 You can even refill your water bottle at many public restrooms, train stations, and parks.

Bottled Water vs Tap Water

Some travelers prefer bottled water out of habit or for taste, but in Japan, there’s no health reason to avoid tap water.

My Personal Opinion

I love drinking water, and I’ve tried water in many parts of Japan.
If you ever travel to Kumamoto, try the water near Mount Aso — it’s incredibly fresh and delicious.
I also think the water in Toyama is some of the best I’ve tasted in Japan.

These regions are known for natural spring water, and even local restaurants often use it in their cooking or serve it to customers.
If you're in these areas, don’t miss the chance to drink local water straight from the source 💧⛰️

Travel Tips

• Bring a reusable bottle — tap water is safe and free
• Refill at train stations or hotel rooms
• Soft water is gentle on the stomach — even for sensitive travelers
• Buy bottled water only if you're hiking, in very rural areas, or prefer a specific taste
• Local bottled water brands from mountain areas (like Mt. Fuji or the Japanese Alps) can be fun souvenirs