鬼怒川仁王尊の湯
Kinugawa Niōson-no-Yu (Niō Onsen)Operated by · 有限会社 オーワイ
黄
Sulfur
- Color
- colorless and clear
- Taste
- tasteless
- Odor
- weak hydrogen sulfide
Sodium Sulfate-Carbonate-Chloride spring
pH 9.6AlkalineHot source · 44°CStrongly alkalineSulfur-richHigh silica
Composition fingerprint0.3 g/kg dissolved · Hypotonic
Na⁺95
SO₄²⁻30
CO₃²⁻26
Cl⁻21
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Sulfate SO₄²⁻
- "gypsum / Glauber's salt" — vessels and wound healing.
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A simple sulfur spring rising in Kinugawa Onsen, Nikkō. It is lightly mineralized at just 0.28 g/kg of dissolved solids, so the water reads gentle rather than assertive — yet a weak hydrogen sulfide note lifts off it at the source, the tell-tale of the sulfide ion the certificate records. The headline number is the pH: 9.6 at the wellhead, strongly alkaline, which gives the pronounced slippery feel that places it in Japan's beauty-water family, reinforced by 52 mg/kg of metasilicic acid. In the bath the water itself is colorless, clear and tasteless.
Sampled at delivery pipe·Analyzed Jul 30, 2020·一般社団法人 栃木県薬剤師会検査センター
