蓬来湯
Horai-yuOperated by · (社)共済組合
Sodium Chloride-Carbonate spring
Horai-yu is a strongly alkaline simple sulfur spring (pH 10.1) — sharply slippery on the skin, sitting squarely in the Japanese 'beauty-water' family. At the wellhead the water carries a faint rotten-egg note of H₂S and a mild salty tang. Mineralization is light at 0.284 g/kg, so the character comes from the sulfur fraction (HS-, thiosulfate) and the high pH rather than from bulk solutes. Classified as a low-temperature spring (31.8 °C) heated for bathing.
- Color
- colorless and clear
- Taste
- salty
- Odor
- faint hydrogen sulfide
- Sulfur-rich
- Strongly alkaline
Analyzed Dec 18, 1997·和歌山県衛生公害研究センター·Cert no. 第6号-6