Sounkyo Onsen Katsura no Yu 1, 2, 3 Mixed Source
Analysis UnverifiedSounkyo Onsen traces its roots to the Shioya hot spring opened beside the Ishikari River in the early Taisho era. The Katsura no Yu 1-2-3 mixed source wells up naturally at about 79°C from only two meters underground, is stored in a tank and piped along the mountainside to the baths. Softly scented with sulfur and silky on the skin, it leaves bathers feeling light, a fine companion for travelers unwinding beneath the gorge's towering cliffs.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A trace component with gentle antibacterial and anti-inflammatory action.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
The aroma typical of sulfur springs, with circulatory and antibacterial effects.
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.
With the source emerging at 78.8°C, water near the inlet can be very hot. Choose a cooler spot and soak for around ten minutes. Remove silver jewelry, as the sulfur content may tarnish it.
A simple sulfur spring holding 2.5 mg/kg hydrosulfide plus free hydrogen sulfide, it also carries 196.2 mg/kg bicarbonate and 101.4 mg/kg metasilicic acid that may support silky skin. Its sulfur-scented warmth is traditionally associated with immune system stimulation, ideal after a mountain hike.
The source is very hot, so take care near the inlet and avoid overly long soaks. Sulfur may discolor metal accessories.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Sounkyo Onsen Katsura no Yu 1, 2, 3 Mixed Source
- Spring type
- Simple Sulfur Hot Spring
- Old spring type name
- 単純硫黄泉
- Source temperature
- 78.8℃
- Flow rate
- 319 L/min
- Flow type
- 自然湧出
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2005-02-09
Cations
- Sodium ion Na⁺
- 130 mg/kg
- Potassium ion K⁺
- 8.5 mg/kg
- Ammonium ion NH₄⁺
- 5.2 mg/kg
- Magnesium ion Mg²⁺
- 1.1 mg/kg
- Calcium ion Ca²⁺
- 15.5 mg/kg
- Aluminum ion Al³⁺
- not detected
- Manganese ion Mn²⁺
- 0.20 mg/kg
- Iron(II) ion Fe²⁺
- 0.06 mg/kg
- Zinc ion Zn²⁺
- not detected
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- 0.01 mg/kg
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 0.16 mg/kg
Anions
- Fluoride ion F⁻
- 1.4 mg/kg
- Chloride ion Cl⁻
- 58.6 mg/kg
- Hydrogen sulfide ion HS⁻
- 2.5 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 1.7 mg/kg
- Sulfate ion SO₄²⁻
- 84.8 mg/kg
- Bicarbonate ion HCO₃⁻
- 196 mg/kg
- Carbonate ion CO₃²⁻
- 10.2 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.10 mg/kg
- Total anions
- 0.36 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 0.20 mg/kg
- Metasilicic acid H₂SiO₃
- 101 mg/kg
- Metaboric acid HBO₂
- 15.4 mg/kg
- Total undissociated
- 0.12 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 5.3 mg/kg
- Free hydrogen sulfide H₂S
- 0.50 mg/kg
- Total dissolved gas
- 0.01 mg/kg
Totals
- Total dissolved substances
- 0.63 mg/kg
- Component total
- 0.64 mg/kg
Usage
- Usage status
- Unknown
Indications & Contraindications
- Bathing indications
- Atopic dermatitis, Plaque psoriasis, Chronic eczema, Epidermal suppuration
- General indications
- High blood pressure (mild), Rheumatoid arthritis, Autonomic instability, Insomnia, Depression, 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), Severe chronic dermatitis (sulphur springs)
Drinking
- Drinkability
- Not drinkable
