湯の山温泉表湯1・表湯2混合泉
Yunoyama Onsen Omote-yu No.1 and No.2 Blended SourceMixed source
Sampled at mixing tank
湯
Simple
Classification
Sodium Bicarbonate-Fluoride spring
A blended alkaline simple spring combining Yunoyama Onsen's Omote-yu No.1 and No.2 in a two-to-one ratio at the mixing tank. At pH around 9.0 the water sits firmly in Japan's beauty-water family, with a soft, slippery feel on the skin. Total dissolved solids are light at 190 mg/kg, but the source carries a notable 46.5 Bq/kg of radon — enough to place it in the radon-bearing 'hormesis' tradition. Cold at the wellhead (25.9 °C), so the bath is reheated for soaking.
pH
9.00
Alkaline
Source temperature
25.9°C
Low temp.
Tonicity
0.19g/kg
Hypotonic
Flow rate
79.5L/min
Typical
Free CO₂
5.90mg/kg
Low
Radon
47Bq/kg
Typical
- Color
- almost colorless and clear
- Taste
- tasteless
- Odor
- odorless
Highlights
- High radon
- Top-decile alkaline
Analyzed Jun 28, 2024·三重県保健環境研究所