道後温泉 第2分湯場
Dogo Onsen No. 2 Distribution StationOperated by · ホテルかつらぎ
Sodium Bicarbonate-Chloride-Fluoride spring
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A gentle alkaline simple thermal spring, piped from Dogo Onsen's No. 2 distribution station in Yunomachi, Matsuyama. Mineralization is light and the water is easy on the body, but the alkalinity gives it the slippery feel that places it squarely in Japan's beauty-water family, helped along by a useful dose of metasilicic acid. The posted panel names autonomic nervous system instability, insomnia and depressed mood among the spring-type indications, alongside stress-related symptoms and fatigue recovery. It reaches the baths diluted when the source runs low, reheated, recirculated through a filter and chlorine-disinfected to meet Matsuyama's public-bath hygiene standard.
Analyzed Dec 6, 2023·愛媛県立衛生環境研究所