新穂高の湯 下流井
Shinhotaka no Yu Downstream Well黄
Sulfur
- Color
- colorless and clear
- Taste
- not recorded
- Odor
- faint hydrogen sulfide
Sodium Chloride-Bicarbonate spring
pH 6.9NeutralHot source · 92°CHigh silicaSulfur-rich
Composition fingerprint0.8 g/kg dissolved · Hypotonic
Na⁺77
Ca²⁺15
Cl⁻53
HCO₃⁻37
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A simple sulfur spring pumped up at 92 °C, which puts it among Japan's hottest natural sources — the well sits in the Okuhida hot spring villages of Takayama. The water runs colorless and clear, yet carries the unmistakable faint rotten-egg note of hydrogen sulfide from free H₂S and hydrosulfide ions. At neutral pH and only 793 mg/kg of dissolved solids it stays lightly mineralized and gentle on the body. What stands out is the metasilicic acid at 247 mg/kg — enough to leave the kind of thin silica film that puts this water squarely in Japan's beauty-water family.
Sampled at wellhead·Analyzed Apr 22, 2021·地熱エンジニアリング株式会社·Cert no. 第2021H01-1号
