龍神小又川温泉
Ryujin Komatagawa OnsenOperated by · 龍神小又川温泉開発有限会社
Sampled at wellhead
曹
Bicarbonate
Classification
Sodium Bicarbonate spring
A sodium-bicarbonate-led cold-mineral spring at 19.5 °C (below the 25 °C threshold for a thermal source), heated for bathing. Weakly alkaline at pH 8.6–8.7, it carries the soft, slippery touch of Japan's beauty-water family even though mineralization is light at 712 mg/kg. The certificate notes bubbles forming at the wellhead. The lab classifies it as an onsen under the Hot Springs Act on fluoride and sodium-bicarbonate content, but it does not meet the stricter 'therapeutic spring' (ryōyōsen) thresholds, so no formal spring-quality name is assigned.
pH
8.70
Weakly alkaline
Source temperature
19.5°C
Cold mineral
Tonicity
0.71g/kg
Hypotonic
Flow rate
169L/min
Typical
Free CO₂
1.40mg/kg
Low
- Color
- colorless and clear
- Taste
- tasteless
- Odor
- odorless
Analyzed Dec 14, 2015·和歌山県環境衛生研究センター·Cert no. 温泉第1064号