Tap water across most regions in Japan is safe to drink and fully regulated.
Japan operates one of the most advanced water treatment systems in the world. Water is clean, regulated, and safe to consume in both major cities and smaller towns.
Quick Overview
Tap Water Concern: Our Advice Tap Water Drinkable? ✅ Yes, it’s safe to drink Common Risks: Minimal — high quality standards Brush Teeth? ✅ Yes, no concerns Wash Fruits/Vegetables? ✅ Yes, safe to use tap water Use Ice in Drinks? ✅ Yes, generally safe in restaurants Safe to Shower? ✅ Yes Filter Bottle Needed? ❌ No, not necessary
Information compiled from CDC, WHO, and official water providers across Japan.
Worried About Tap Water? Consider Using a Filter Bottle
We don’t sell any products ourselves, but we’ve taken the time to research and compare the best water filter bottles for travel—based on real-world use, expert reviews, and traveler feedback. A quality filter bottle can help you avoid stomach issues from unsafe tap water, reduce your reliance on plastic, and save money on bottled water while abroad. Check out the filter bottles travelers trust most.
Health Risks for Travelers
Even when tap water meets international safety standards, it can still take some adjustment for travelers. Differences in water chemistry, treatment methods, or piping systems may not affect locals but could lead to minor digestive issues for visitors.
Potential (but low-level) concerns include:
- Changes in mineral content that your body isn’t used to
- Older buildings with worn-out plumbing systems
- Ice or raw produce that might have been rinsed with tap water in less consistent establishments
- Regional variation — even within safe countries, rural areas may differ from urban centers
- Travelers with sensitive stomachs may benefit from filtered water in the first days
These aren’t major health risks, but staying aware of how your body reacts can make your trip more comfortable.
If you experience persistent symptoms while traveling in Japan, consult a local doctor or pharmacist. In many tourist areas, English-speaking care is available.
More About Tap Water in Japan
Japan’s tap water is known for its high quality and is tightly regulated under the Waterworks Law, which requires 51 different safety inspections.
The water is generally soft, with low mineral content. This can affect the taste—especially for travelers who are used to harder water. In large cities like Tokyo, advanced treatment technologies ensure clean and safe drinking water. In rural areas, water quality may vary depending on the local source and treatment systems.
FAQs About Tap Water in Japan
Is it safe to brush your teeth with tap water?
The water is clean and treated, so you can brush without thinking twice.
Can I use tap water to wash my face?
Definitely—it’s safe to wash your face with tap water in Japan with no risk.
Is it safe to use ice in drinks?
Ice here is just as safe as back home, made from treated tap water.
Can I shower safely with tap water?
Tap water is clean and safe for all hygiene, including showering.
Even clean-looking water can be harsh on your skin when you’re abroad. A travel shower filter screws on in seconds and can help. Just check that the showerhead isn’t recessed or built into the wall—you’ll need access to connect it. This one’s a traveler favorite for a reason. Click here to check it out.
Can I wash fruits and vegetables with tap water?
Absolutely—you can wash fruits and veggies just like you would at home.
Is bottled water expensive in Japan?
Bottled water is available, but you likely won’t need it—tap water is safe and free.
Japan is often part of broader Asia trips, frequently combined with South Korea, China, or Russia. Tap water systems are advanced, but vary regionally.