Safe Japan

Is Tap Water Safe to Drink in Tokyo?

Q: Is Tokyo tap water safe to drink?

Yes, it undergoes over 100 quality checks and is safe to drink directly from the tap anywhere in the city.

Q: Why does Tokyo sell its own bottled tap water?

The Bureau of Waterworks bottles "Tokyo Water" from the same treated supply as a public demonstration of its quality and safety.

Q: Is Tokyo tap water good for making tea or coffee?

Yes, its relatively soft mineral profile is well suited for both.

Yes, tap water in Tokyo is safe to drink straight from the tap and passes over 100 separate quality checks by the Tokyo Metropolitan Waterworks.

Hardness

Soft

Country

Japan

Rating

Safe

Water Source

Tokyo draws mainly from the Tone and Ara Rivers via the Tone River water system, treated at advanced filtration plants that include ozone and biological activated carbon treatment.

Contaminants & Concerns

No significant health concerns. Some residents note a mild taste difference from bottled water, addressed by the city's own bottled "Tokyo Water" produced from the same tap supply to demonstrate confidence in its quality.

Tips

•Tap water is safe everywhere, including from public building and station taps
•The city even sells its own bottled tap water as a quality demonstration
•No need to buy bottled water for safety reasons

Frequently Asked Questions

Is Tokyo tap water safe to drink?

Why does Tokyo sell its own bottled tap water?

Is Tokyo tap water good for making tea or coffee?

Other Cities in Japan

Kyoto Osaka

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