Nikawa Gensen

煮川源泉
Info pending

Gunma Kusatsu, Agatsuma District

群馬県 草津町

Day-use BathFree-Flowing Onsen

AT A GLANCE

Nikawa Gensen is a sulfur spring, acidic spring, chloride spring, and sulfate spring (pH 2.1, 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, chronic eczema, and psoriasis.

SOURCES
♨Nikawa Spring
煮川源泉
Acidic sulfur-containing aluminum sulfate chloride spring (hydrogen sulfide type)
硫
Sulphur Spring
酸
Acidic Spring
塩
Chloride Spring
硫塩
Sulphate SpringpH 2.0648.8℃Natural sp…
See effects, components & details
How Long to Stay (Toji)
Start with 2 nights / 3 days

Japan’s Ministry of the Environment notes that even a short stay refreshes you. For a full therapeutic cure, around 2–3 weeks is the guideline.

More on toji length
USAGE
Free-Flowing Onsen
Pure spring water — no dilution, no recirculation
HeatedNo
DilutedNo
RecycledNo
FilteredNo
DisinfectedNo
AdditivesNo
▸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.

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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