Kusatsu Onsen
草津温泉
Gunma Kusatsu, Agatsuma District
群馬県 吾妻郡草津町
Kusatsu Onsen
草津温泉
Gunma Kusatsu, Agatsuma District
群馬県 吾妻郡草津町
AT A GLANCE
Kusatsu Onsen is an acidic spring, chloride spring, and sulfate spring (pH 2.0, acidic). Naturally flowing (no recycling or dilution). Contains ≥50 mg/kg of metasilicic acid, certified as a beauty spring. Per Japan's Ministry of the Environment guidelines, indicated for atopic dermatitis and psoriasis.
USAGE
HeatedNo
DilutedYes
RecycledNo
FilteredNo
DisinfectedNo
AdditivesNo
Diluted: Water dilution for temperature adjustment. As the source spring temperature is extremely high at 94.5-96°C, water dilution is performed to lower the temperature to levels suitable for drinking. While some facilities specify "no water dilution or heating" on official websites, water dilution is typically included during heat exchange in the distribution system.
▸Note
The temperature, pH and component values shown here are based on the hot spring analysis (source). Actual values in the bath may differ depending on heating, dilution, recycling and filtration. Please check current usage status at the facility.
REVIEWS
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✨ The descriptions, catch phrases, and translations on this page are generated by AI (Claude). pH, temperature, and component values are OCR-extracted from the official analysis report. Learn more