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Rebuntou onsen

Hokkaido · 礼文島温泉

Rebuntou onsen is a hot spring town in Hokkaido, Japan. The water leaves the ground at 50.2°C, hot. It measures pH 8.6 — mildly alkaline, the slippery kind. Officially the water is classed as chloride spring and sulfate spring. Its sources put out around 200 litres a minute.

Chloride springSulfate spring

The water here

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.

The numbers

Water temperature: 50.2°C
pH: 8.6 (mildly alkaline)
Discharge: 200 litres a minute
Address in Japanese: 北海道礼文郡礼文町大字香深村 {{Location map many | Japan Hokkaido | relief = 1 | caption = | w

Figures from the town's Japanese Wikipedia article.