Is Osaka Tap Water Safe To Drink?
Yes! The tap water is safe to drink.
Tap water in Osaka, Japan, is treated and regulated to meet national safety standards. It is generally considered safe for drinking.
Osaka's water supply undergoes rigorous testing for contaminants like bacteria, heavy metals, and chemicals to ensure potability.
Many residents and visitors drink tap water without issues. Using a filter is optional but can improve taste and remove chlorine.
Last checked: 2025-04-25
Japan is ranked as number 38 globally with a score of 78.7% in the water quality EPI research conducted by Yale University.
Source of Water in Osaka, Japan
Osaka's tap water mainly comes from the Yodo River and the Katsura River. These rivers provide surface water for the city's supply.
Water is collected in reservoirs and undergoes treatment processes including filtration, sedimentation, and disinfection before distribution.
Groundwater sources supplement surface water but contribute a smaller portion. The combination ensures a stable, safe water supply for Osaka.
Osaka Drinking Fountains
Public drinking fountains in Osaka generally use treated tap water, so they are considered safe for drinking.
Maintenance and cleanliness impact safety; well-maintained fountains reduce risks of contamination or bacterial growth.
Users should observe the fountain's condition before use and avoid if signs of damage or dirt are present.
Drinking Water Map
Here is a map showing all the locations of drinking water spots in Osaka. You can click on each water drop to open the spot directly in Google Maps for directions.
Nearby Places
About the Author
Hi, I'm Emily Hartman, a researcher and water quality specialist with a background in public health.
I've spent the last few years studying how everyday water systems impact our health, and I'm passionate about making that information clear and useful for everyone.
Safe, clean tap water isn't just my job — it's something I truly care about.