Hamatombetsu Onsen
Analysis UnverifiedRising near Lake Kuccharo, a famed stopover for migrating swans close to the Sea of Okhotsk, Hamatombetsu Onsen has long warmed this northern lakeside town. Sodium-rich, with chloride and bicarbonate in near balance, it offers both smoothness and lasting warmth, and its unusually high metaboric acid adds a distinctive character to this quiet lakeside spring.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
A "beauty spring" that gently emulsifies dead skin cells, leaving skin smooth 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.
At pH 8.01 the water feels soft; thanks to its chloride warmth, take several 10-minute soaks rather than one long one, and rehydrate afterward.
With 1,885 mg/kg of chloride, the water may support restorative warmth that lingers after bathing, while 2,849 mg/kg of bicarbonate at pH 8.01 is 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
- Hamatombetsu Onsen
- Spring type
- Sodium Chloride and Bicarbonate Spring
- Source temperature
- 47.5℃
- pH
- 8.01
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 1995-11-02
- Analyst organization
- 財団法人北海道薬剤師会公衆衛生検査センター
Cations
- Sodium ion Na⁺
- 2260 mg/kg
- Potassium ion K⁺
- 13.1 mg/kg
- Ammonium ion NH₄⁺
- 13.5 mg/kg
- Magnesium ion Mg²⁺
- 3.7 mg/kg
- Calcium ion Ca²⁺
- 4.4 mg/kg
- Manganese ion Mn²⁺
- 0.02 mg/kg
- Iron(II) ion Fe²⁺
- 0.20 mg/kg
- Iron(III) ion Fe³⁺
- 1.2 mg/kg
- Zinc ion Zn²⁺
- 0.01 mg/kg
- Total cations
- 2.3 mg/kg
Anions
- Fluoride ion F⁻
- 4.0 mg/kg
- Chloride ion Cl⁻
- 1885 mg/kg
- Hydroxide ion OH⁻
- 0.02 mg/kg
- Bicarbonate ion HCO₃⁻
- 2849 mg/kg
- Carbonate ion CO₃²⁻
- 21.9 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.20 mg/kg
- Total anions
- 4.8 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 42.4 mg/kg
- Metaboric acid HBO₂
- 357 mg/kg
- Total undissociated
- 0.40 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 48.5 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.05 mg/kg
Totals
- Total dissolved substances
- 7.5 mg/kg
- Component total
- 7.5 mg/kg
- Evaporation residue
- 6.0 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