湯沢温泉 (湯元)
Yuzawa Onsen (Yumoto)黄
Sulfur
Classification
Sodium Chloride-Sulfate spring
A simple sulfur spring known as the wellhead (yumoto) of Yuzawa Onsen — alkaline, hypotonic, and hot (44.3 °C at the source). Mineralization is light at about 330 mg/kg, but the sulfur character carries a faint rotten-egg note, and the alkaline pH gives the soft, slippery feel of a Japanese 'beauty-water' spring.
Source temperature
44.3°C
Hot
Tonicity
0.33g/kg
Hypotonic
Analyzed Nov 21, 2013·一般財団法人 新潟県環境分析センター·Cert no. 新潟県（登）環企第4号