日の出温泉 きのこの里
Hinode Onsen Kinoko no Sato- Color
- colorless and transparent
- Taste
- tasteless
- Odor
- 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.
- Smooth skindry, rough skin
- Circulationtired legs
- Aches & jointsstiff shoulders
A bicarbonate spring led by sodium with strong calcium and magnesium contributions, layered with chloride and sulfate sub-types. Wellhead temperature near 69 °C places it among Japan's hottest natural sources — the water arrives hot without supplemental heating. Neutral pH keeps the feel gentle on the skin, and the bicarbonate dominance puts it squarely in the Japanese beauty-water family.