Batō Onsen Villages is a hot spring town in Tochigi, Japan. The water leaves the ground at 28–49°C, hot. Officially the water is classed as simple spring, chloride spring, sulfate spring and radioactive spring.
Simple springChloride springSulfate springRadioactive spring
The water here
Simple spring 単純温泉
Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.
Chloride spring 塩化物泉
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Sulfate spring 硫酸塩泉
Clear water with a faintly bitter taste. Known for holding heat.
Radioactive spring 放射能泉
Contains trace radon that leaves the water quickly. Also called radium or radon springs.
With tattoos
Many public baths still turn away visible tattoos, and the rule is set by each bath, not by the town. The reliable way round it is to bathe privately: a room with its own open-air bath, or an inn with a private bath you can book for yourselves.