下地獄5号泉・下地獄9号泉・下地獄16号泉 混合泉
Shimo-jigoku No. 5 / No. 9 / No. 16 Mixed SpringMixed source
黄
Sulfur
+ Chloride · Sulfate
Sodium Chloride-Sulfate spring
Hot source · 87°CSulfur-rich
Composition fingerprint1.4 g/kg dissolved · Hypotonic
Na⁺86
Cl⁻53
SO₄²⁻34
◀ 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
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A blend of three Shimo-jigoku wells in Naruko Onsen, classified as a sulfur-bearing sodium chloride/sulfate spring. The wellhead runs at a scalding 87 °C and is delivered fresh-flow (kakenagashi) to both indoor and open-air baths. Carrying enough H₂S to fall into the sulfur-bearing family, the water has the characteristic rotten-egg note alongside a salty, mineral-rich body.
Sampled at mixing tank·Analyzed Jun 17, 2020·公益財団法人 宮城県公害衛生検査センター·Cert no. 11923