Uzura Onsen
Analysis UnverifiedUzura Onsen is drawn by pump at 160 liters per minute from a well in the farmland of Uzura-cho, Atsusawabe. A 1994 analysis by the Hokkaido Institute of Public Health classified the source as an alkaline simple spring at 30.0°C and pH 8.5. Clear, odorless and tasteless, it carries sodium, chloride, bicarbonate and 122.7 mg/kg of metasilicic acid, soothing the skin with a quiet, unassuming character that suits this modest farming town in southern Hokkaido.
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.
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 source emerges at only 30.0°C, so check the bath temperature before settling in. At pH 8.5 the water is mild; two or three soaks of about ten minutes each, followed by moisturizing, keep skin comfortable.
With a pH of 8.5 and 122.7 mg/kg of metasilicic acid, the water may support silky skin, while its mild simple-spring profile invites deep relaxation after a long drive through rural Hokkaido.
The source is only 30.0°C and must be heated for bathing. Avoid bathing when unwell or after drinking, and take care not to soak too long.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Uzura Onsen
- Spring type
- Alkaline Simple Hot Spring
- Old spring type name
- 単純温泉
- Source temperature
- 30℃
- pH
- 8.5
- Flow rate
- 160 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 1994-07-22
- Analyst organization
- 北海道立衛生研究所
Cations
- Sodium ion Na⁺
- 261 mg/kg
- Potassium ion K⁺
- 12.6 mg/kg
- Ammonium ion NH₄⁺
- 0.20 mg/kg
- Magnesium ion Mg²⁺
- 1.3 mg/kg
- Calcium ion Ca²⁺
- 12.9 mg/kg
- Aluminum ion Al³⁺
- 0.08 mg/kg
- Manganese ion Mn²⁺
- 0.10 mg/kg
- Iron(II) ion Fe²⁺
- 0.40 mg/kg
- Zinc ion Zn²⁺
- not detected
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- not detected
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 0.29 mg/kg
Anions
- Fluoride ion F⁻
- 0.60 mg/kg
- Chloride ion Cl⁻
- 318 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.30 mg/kg
- Bicarbonate ion HCO₃⁻
- 188 mg/kg
- Carbonate ion CO₃²⁻
- 10.8 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.20 mg/kg
- Total anions
- 0.52 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 123 mg/kg
- Metaboric acid HBO₂
- 18.6 mg/kg
- Total undissociated
- 0.14 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 1.0 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.00 mg/kg
Totals
- Total dissolved substances
- 0.95 mg/kg
- Component total
- 0.95 mg/kg
- Evaporation residue
- 0.83 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
