別府市有雲泉寺泉源 外
Beppu Municipal Unsenji Wellhead (and others)Operated by · 別府市
Mixed source
湯
Simple
- Color
- colorless and clear
- Taste
- tasteless
- Odor
- odorless
Sodium Chloride-Bicarbonate spring
pH 7.4NeutralHot source · 64°CHigh silica
Composition fingerprint0.8 g/kg dissolved · Hypotonic
Na⁺80
Cl⁻55
HCO₃⁻27
SO₄²⁻17
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A simple thermal spring fed by Beppu's city-owned Unsenji wellhead together with companion municipal sources, sampled at the storage-tank outlet where they are blended before delivery. The chemistry is neutral and hypotonic with only 764 mg/kg of dissolved solids, so the water reads gentle rather than assertive — colorless, clear, with neither taste nor smell. What lifts it above plain hot water is the silica: metasilicic acid at 159 mg/kg puts it squarely in Japan's beauty-water family, leaving the thin mineral film that makes skin feel noticeably smoother afterwards.
Sampled at mixing tank·Analyzed Mar 16, 2016·公益社団法人大分県薬剤師会 検査センター·Cert no. 大薬検 第7R-28030005号