芳泉、恵泉、わなだの湯、鶴の湯、蓬莱の湯、長寿の湯の混合泉
Hosen, Keisen, Wanada-no-yu, Tsuru-no-yu, Horai-no-yu and Choju-no-yu Mixed SpringOperated by · 株式会社共立メンテナンス
Mixed source
- Color
- faintly yellowish with slight turbidity
- Taste
- faintly metallic, of iron
- Odor
- faint hydrogen sulfide
Sodium-Calcium Bicarbonate-Chloride 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 blend of six Hirayu wells in the Okuhida hot-spring district — Hosen, Keisen, Wanada-no-yu, Tsuru-no-yu, Horai-no-yu and Choju-no-yu — classified as a simple thermal spring, hypotonic and neutral at pH 6.4. With 875 mg/kg of dissolved solids it is lightly mineralized and gentle on the body, yet it is far from characterless: at the spout the water carries a faint yellow tint and a slight haze, a faintly metallic iron note on the tongue and a whisper of hydrogen sulfide. Metasilicic acid runs to 136 mg/kg, enough to leave the thin silica film that puts this water in Japan's beauty-water family. The certificate was taken at the inn's men's indoor bath inlet rather than at a wellhead, so the reading describes the water as it actually reaches the tub.
Sampled at bath inlet·Analyzed Feb 16, 2021·株式会社神岡衛生社·Cert no. 岐阜県第3号