梅園温泉
Umezono OnsenOperated by · 梅園温泉組合
- Color
- very faintly yellow and clear
- Taste
- faintly metallic
- Odor
- almost odorless
Sodium-Calcium-Magnesium Bicarbonate spring
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
Umezono Onsen's own source in Motomachi, Beppu, is a simple thermal spring: neutral, hypotonic, and lightly mineralized at 856 mg/kg of dissolved solids, so it sits soft on the body rather than announcing itself. At the wellhead the water is clear with a very faint yellow tint and leaves a weak metallic note on the tongue from a trace of iron. What lifts it is the silica. Metasilicic acid runs to 213 mg/kg, generous enough to leave the thin film that makes skin feel noticeably smoother afterwards, placing it squarely in Japan's beauty-water family. Bicarbonate dominates the anion balance at 77.5 mval%, lending a soda-like softness even though the low total mineralization keeps the classification at simple spring.
Sampled at wellhead·Analyzed Nov 1, 2018·公益社団法人大分県薬剤師会検査センター·Cert no. 大薬検 第7R-30110001号