Kami no Yu
Analysis UnverifiedLocal lore says this spring was found in 1972 after a divine revelation, a story preserved in its name. Pumped from deep beneath a hillside facing Mt. Fuji and the Kofu Basin, the sodium chloride water is mildly alkaline and smooth, with a faint brown tint and a hint of sulfur, combining lasting warmth with a gentle feel on the skin.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A rare radioactive spring where trace radiation absorbed via inhalation and skin is expected to stimulate cells (the "hormesis effect").
Mild antibacterial action keeps the skin clean. Trace transdermal absorption supports tooth and bone health.
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.
At pH 8.4 the water feels soft; as chloride warmth lingers after bathing, enjoy a slow soak in a cooler tub and rehydrate afterward.
With 679.3 mg/kg of chloride, the water may support restorative warmth after bathing, while its pH 8.4 and 50.3 mg/kg of metasilicic acid are traditionally associated with silky skin.
This warming water can cause dizziness or dehydration if you soak too long; keep sessions short if you have heart or blood pressure concerns.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Kami no Yu
- Spring type
- Sodium Chloride Spring
- Source temperature
- 46.4℃
- pH
- 8.4
- Flow rate
- 137 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2016-12-14
- Analyst organization
- 株式会社山梨県環境科学検査センター
- Registration No.
- 14山梨み自第1号
Cations
- Hydrogen ion H⁺
- 0.00 mg/kg
- Lithium ion Li⁺
- 0.60 mg/kg
- Sodium ion Na⁺
- 433 mg/kg
- Potassium ion K⁺
- 4.4 mg/kg
- Ammonium ion NH₄⁺
- 0.20 mg/kg
- Magnesium ion Mg²⁺
- 0.10 mg/kg
- Calcium ion Ca²⁺
- 25.3 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 0.00 mg/kg
- Iron(II) ion Fe²⁺
- 0.00 mg/kg
- Iron(III) ion Fe³⁺
- 0.00 mg/kg
- Zinc ion Zn²⁺
- 0.00 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Strontium ion Sr²⁺
- 0.10 mg/kg
- Barium ion Ba²⁺
- 0.00 mg/kg
- Copper ion Cu²⁺
- < 0.01 mg/kg
- Cadmium ion Cd²⁺
- < 0.005 mg/kg
- Total cations
- 0.46 mg/kg
Anions
- Fluoride ion F⁻
- 8.3 mg/kg
- Chloride ion Cl⁻
- 679 mg/kg
- Hydroxide ion OH⁻
- 0.00 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.30 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 0.00 mg/kg
- Bicarbonate ion HCO₃⁻
- 35.9 mg/kg
- Carbonate ion CO₃²⁻
- 8.8 mg/kg
- Bromide ion Br⁻
- 1.8 mg/kg
- Iodide ion I⁻
- 0.20 mg/kg
- Hydrogen sulfate HSO₄⁻
- 0.00 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.00 mg/kg
- Arsenite ion AsO₂⁻
- 0.00 mg/kg
- Sulfide ion S²⁻
- 0.00 mg/kg
- Hydrogen metasilicate HSiO₃⁻
- 0.00 mg/kg
- Metaborate ion BO₂⁻
- 0.00 mg/kg
- Total anions
- 0.73 mg/kg
Undissociated Components
- Sulfuric acid H₂SO₄
- 0.00 mg/kg
- Phosphoric acid H₃PO₄
- 0.00 mg/kg
- Arsenious acid HAsO₂
- 0.00 mg/kg
- Metasilicic acid H₂SiO₃
- 50.3 mg/kg
- Metaboric acid HBO₂
- 19.9 mg/kg
- Total undissociated
- 0.07 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 19.0 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.02 mg/kg
Trace Components
- Radon Rn
- 23.8 Bq/kg
Totals
- Total dissolved substances
- 1.3 mg/kg
- Component total
- 1.3 mg/kg
- Evaporation residue
- 1.2 mg/kg
Usage
- Usage status
- Unknown
Indications & Contraindications
- Bathing indications
- Cuts and grazes, Peripheral circulatory failure, Poor circulation, Depression, Xeroderma
- General indications
- High blood pressure (mild), Rheumatoid arthritis, Autonomic instability, Insomnia, 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
