神通温泉
Jinzu OnsenOperated by · 株式会社神通温泉
Sampled at wellhead
湯
Simple
Classification
Sodium HSiO3-Carbonate spring
A cold-mineral spring (20.6 °C) drawn from beneath Kinokawa, Wakayama, where sodium leads and fluoride, metaborate, and total sulfur each push the chemistry above the Hot Spring Act's qualifying thresholds. The water is strongly alkaline at pH 9.6 — it carries a faint H₂S note at the wellhead and the classic slippery 'beauty-water' feel of high-pH springs. Mineralization is light (0.25 g/kg total solids), and the source is heated for bathing. It does not meet the stricter 'therapeutic spring' bar, but the bath is a stop on the Kii-Izumi onsen pilgrimage circuit.
pH
9.60
Alkaline
Source temperature
20.6°C
Cold mineral
Tonicity
0.25g/kg
Hypotonic
- Color
- colorless and clear
- Taste
- tasteless
- Odor
- faint hydrogen-sulfide note
Highlights
- Strongly alkaline
- Cold mineral
Analyzed May 29, 2018·和歌山県環境衛生研究センター·Cert no. 温泉第1084号