四季の郷温泉
Shiki-no-Sato Onsen湯
Simple
- Color
- Colorless and clear
- Taste
- Faint sulfur taste
- Odor
- Faint hydrogen-sulfide note
Sodium Carbonate spring
pH 9.5AlkalineStrongly alkalineTop-decile alkaline
Composition fingerprint0.2 g/kg dissolved · Hypotonic
Na⁺90
CO₃²⁻50
Cl⁻19
F⁻14
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Carbonate CO₃²⁻
- strongly alkaline; slippery feel.
Known good for
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A sodium-led alkaline simple thermal spring with a remarkable slippery feel on the skin — pH 9.5 at the wellhead rising to 9.8 in the lab, squarely in the strongly alkaline range that defines Japan's beauty-water family. Lightly mineralized at 152 mg/kg, so the water is gentle and unobtrusive on the body. A faint rotten-egg note of H₂S and a hint of sulfur on the tongue emerge straight from the source.
Sampled at wellhead·Analyzed Mar 6, 2020·一般社団法人 和歌山県薬剤師会 医薬品・公衆衛生検査センター·Cert no. 第E2002233号