湯沢パーク温泉
Yuzawa Park Onsen湯
Simple
Calcium-Sodium Sulfate spring
pH 8.7AlkalineHot source · 43°CTop-decile alkaline
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Ca²⁺62
Na⁺38
SO₄²⁻82
◀ CationsAnions ▶
- Calcium Ca²⁺
- settling and calming; can leave a white mineral bloom.
- Sulfate SO₄²⁻
- "gypsum / Glauber's salt" — vessels and wound healing.
Known good for
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
Yuzawa Park Onsen is a hot (42.5 °C at the source) simple thermal spring on the alkaline end of the scale (pH 8.7 at the wellhead, 9.2 in the lab). It sits squarely in Japan's classic 'beauty-water' family — soft, slippery feel on the skin from the high pH. Lightly mineralized at 454 mg/kg of dissolved solids, so the body of the water stays gentle.
Analyzed May 18, 2017·一般財団法人 新潟県環境分析センター·Cert no. 新潟(登)環境企第4号
