Shuzenji Onsen Mixed Source
Analysis UnverifiedShuzenji Onsen traces its origin to the monk Kobo Daishi, said to have struck a rock with his tokko and released hot water. Today the Shuzenji Onsen Mixed Source gathers wells scattered across Shiraida, Koyama and Minamiyama, blending them into one gentle alkaline flow. Its smooth touch lingers on the skin, soothing travelers who steep beside the murmuring Katsura River.
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.
- Alkaline (pH)pH 8.6
- Feel
- Feels slippery and silky on the skin.
- Said to
- Said to remove old skin cells and excess sebum.
- Note
- Skin can dry out afterwards—moisturize after bathing.
- Metasilicic acid63.2 mg/kg
- Feel
- Your skin may feel smoother.
- Said to
- 50 mg/kg or more is said to mark a “skin-beautifying spring”; it is also used in skincare.
- Note
- The “skin-beautifying” label is a common rule of thumb, not a legal standard.
- Source temperature60.1℃
- Feel
- The source is 42°C or hotter; the bath may be on the hot side.
- Said to
- Heat is said to boost circulation and warm the body.
- Note
- Older people and those with high blood pressure or heart conditions should avoid baths of 42°C or more. Keep soaks short.
Effects are general descriptions based on the Ministry of the Environment’s indications by spring type, not a guarantee.
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.
Because the source exceeds 60°C, baths are cooled with water to around 41-42°C. The mild alkaline water is gentle, but limit soaks to about ten minutes and alternate with half-body bathing.
With pH 8.6 and 63.2 mg/kg of metasilicic acid, this simple alkaline spring is traditionally associated with silky skin. Its low-irritation water may support deep relaxation after a long day of work or travel, inviting an unhurried soak.
Avoid bathing with acute illness or serious heart conditions. Drink water before and after bathing, and avoid lingering too long in the hot water.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Shuzenji Onsen Mixed Source
- Spring type
- Alkaline Simple Hot Spring
- Source temperature
- 60.1℃
- pH
- 8.6
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2014-09-17
- Analyst organization
- 一般財団法人静岡県生活科学検査センター
- Registration No.
- 静岡県第1号
Cations
- Sodium ion Na⁺
- 146 mg/kg
- Potassium ion K⁺
- 5.9 mg/kg
- Magnesium ion Mg²⁺
- 0.50 mg/kg
- Calcium ion Ca²⁺
- 13.4 mg/kg
- Aluminum ion Al³⁺
- < 0.05 mg/kg
- Manganese ion Mn²⁺
- < 0.05 mg/kg
- Iron(II) ion Fe²⁺
- < 0.05 mg/kg
- Iron(III) ion Fe³⁺
- < 0.05 mg/kg
- Copper ion Cu²⁺
- < 0.05 mg/kg
- Total cations
- 166 mg/kg
Anions
- Chloride ion Cl⁻
- 133 mg/kg
- Hydroxide ion OH⁻
- 0.07 mg/kg
- Thiosulfate ion S₂O₃²⁻
- < 0.1 mg/kg
- Sulfate ion SO₄²⁻
- 118 mg/kg
- Bicarbonate ion HCO₃⁻
- 52.2 mg/kg
- Carbonate ion CO₃²⁻
- 8.6 mg/kg
- Bromide ion Br⁻
- 0.20 mg/kg
- Iodide ion I⁻
- 0.30 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.20 mg/kg
- Total anions
- 312 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 0.20 mg/kg
- Metasilicic acid H₂SiO₃
- 63.2 mg/kg
- Metaboric acid HBO₂
- 5.2 mg/kg
- Total undissociated
- 68.6 mg/kg
Dissolved Gas
- Total dissolved gas
- 0.00 mg/kg
Totals
- Total dissolved substances
- 547 mg/kg
- Component total
- 547 mg/kg
- Evaporation residue
- 512 mg/kg
Usage
- Usage status
- Unknown
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
