Kussharo Onsen Sanko No. 1 Well
Analysis UnverifiedSanko Onsen is a small inn a little east of the base of the Wakoto Peninsula on Lake Kussharo, surrounded by lakeside woodland. It has its own source from a well about 200 m deep, and its large concrete outdoor bath is divided into hot, warm and lukewarm sections, with the water flowing from the hottest tub onward. The water is clear with a faint hint of hydrogen sulfide and has the soft feel typical of a simple spring. Birdsong drifts in from the forest, and guests can pick the temperature they like and soak at leisure.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
A trace component with gentle antibacterial and anti-inflammatory action.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
▸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.
The outdoor bath is divided into hot, warm and lukewarm sections. Start in the cooler tub to acclimatize, then move to the temperature you prefer. There are no taps; use a bucket to pour water from the tub.
With 207.2 mg/kg bicarbonate and 165.2 mg/kg metasilicic acid smoothing the skin, and the mild composition of a simple spring, this water suits silky skin and deep relaxation during a long soak in the cooler tubs.
The hot tub is around 47°C near the inlet. Avoid staying in too long to prevent dizziness, and drink water often.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Kussharo Onsen Sanko No. 1 Well
- Spring type
- Simple Hot Spring
- Old spring type name
- 単純温泉
- Source temperature
- 48℃
- pH
- 7.6
- Flow rate
- 160 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2007-10-25
- Analyst organization
- 太平洋総合コンサルタント株式会社
Cations
- Sodium ion Na⁺
- 119 mg/kg
- Potassium ion K⁺
- 5.7 mg/kg
- Ammonium ion NH₄⁺
- 0.20 mg/kg
- Magnesium ion Mg²⁺
- 2.1 mg/kg
- Calcium ion Ca²⁺
- 16.9 mg/kg
- Aluminum ion Al³⁺
- 0.06 mg/kg
- Manganese ion Mn²⁺
- 0.08 mg/kg
- Iron(II) ion Fe²⁺
- 0.08 mg/kg
- Zinc ion Zn²⁺
- not detected
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- not detected
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 0.14 mg/kg
Anions
- Fluoride ion F⁻
- 0.90 mg/kg
- Chloride ion Cl⁻
- 81.2 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.40 mg/kg
- Sulfate ion SO₄²⁻
- 15.5 mg/kg
- Bicarbonate ion HCO₃⁻
- 207 mg/kg
- Carbonate ion CO₃²⁻
- 0.60 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.60 mg/kg
- Total anions
- 0.31 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 165 mg/kg
- Metaboric acid HBO₂
- 5.8 mg/kg
- Total undissociated
- 0.17 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 8.7 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.01 mg/kg
Totals
- Total dissolved substances
- 0.62 mg/kg
- Component total
- 0.63 mg/kg
- Evaporation residue
- 0.50 mg/kg
Usage
- Heating
- No
- Dilution
- No
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Autonomic instability, Insomnia, Depression
- General indications
- High blood pressure (mild), Rheumatoid arthritis, Chronic pain or stiffness in muscles and joints, Muscle stiffness due to motor paralysis, Gastrointestinal dysfunction
- Contraindications
- Acute illness (especially with fever), Active tuberculosis, Malignant tumors, Severe heart disease, Respiratory failure, Renal failure, Bleeding disorders, Severe anemia, Any actively progressing illness, Pregnancy (especially early and late stages)
Drinking
- Drinkability
- Not drinkable
