塩山温泉 第2井
Enzan Onsen Well No. 2黄
Sulfur
- Color
- almost colorless and clear
- Taste
- sulfurous taste
- Odor
- faint hydrogen sulfide
Sodium Carbonate-Bicarbonate spring
pH 10.1AlkalineCold mineral source · 24°CStrongly alkalineSulfur-richCold mineral
Composition fingerprint0.2 g/kg dissolved · Hypotonic
Na⁺96
CO₃²⁻34
HCO₃⁻22
HSiO₃⁻17
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Carbonate CO₃²⁻
- strongly alkaline; slippery feel.
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Smooth skindry, rough skin
- Sensitive-skin cautionbroken or dry skin
Well No. 2 at Enzan Onsen is a simple sulfur cold-mineral spring with strongly alkaline character (pH 10.1). Source temperature is just 23.8 degC, so it is a cold-mineral spring heated for bathing rather than served at the wellhead. Total dissolved solids are light at 169 mg/kg, but the water carries hydrogen sulfide ions enough to leave a faint sulfurous taste and rotten-egg note at the source. The strong alkalinity gives the pronounced slippery 'beauty-water' feel, the family this spring belongs to.
Sampled at wellhead·Analyzed Feb 19, 2007·社団法人 長野県薬剤師会 検査センター·Cert no. 中No. 18-169号