行幸源泉
Miyuki SpringOperated by · 湯崎温泉県観光株式会社
Mixed source
Sampled at wellhead
塩
Chloride
+ Bicarbonate
Classification
Sodium Chloride-Bicarbonate spring
A sodium-led chloride-bicarbonate blend drawn from three wells. The wellhead runs at a striking 75.5 °C — among Japan's hottest natural sources — and the water carries 11.1 g/kg of dissolved solids, putting it in hypertonic, ocean-strong territory with a clear salty tang. Bicarbonate softness layers in, and 89 mg/kg of metasilicic acid leaves a faint silky film on the skin, alongside the unmistakable whiff of hydrogen sulfide.
Source temperature
75.5°C
Hot
Tonicity
11.12g/kg
Hypertonic
Free CO₂
13mg/kg
Low
Free H₂S
0.29mg/kg
Low
- Color
- colorless and transparent
- Taste
- salty
- Odor
- faint hydrogen sulfide
Highlights
- Strong salt
- Top-decile hot
- High silica
Analyzed Mar 14, 2024·一般社団法人 和歌山県薬剤師会 医薬品・公衆衛生検査センター·Cert no. 第E2403121号