Unga no Yado Otaru Furukawa Source
Analysis UnverifiedDrilled beside the Otaru Canal, lined with Meiji-era stone warehouses, this source is pumped up at 330 liters per minute. Though it emerges as a 20.5°C cold mineral spring, its chloride-rich water, once warmed, wraps the skin softly and lets warmth linger long after the bath. It suits travelers who want to steep away the chill after strolling the canal-side streets.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
Transdermal absorption gently supports skin hydration and muscle relaxation.
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.
Chloride springs hold heat well, so soak for about ten minutes at a time with breaks rather than one long session. Rest until you stop sweating afterward and remember to drink water.
With 937.4 mg/kg of chloride, this water is said to leave a thin salt film on the skin that slows heat loss, offering restorative warmth. On cold northern days, or after a long walk, it is traditionally associated with helping relieve pain in tired legs and back.
The water retains heat strongly, so avoid long soaks and stay hydrated. People with general contraindications for hot-spring bathing should refrain.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Unga no Yado Otaru Furukawa Source
- Spring type
- Sodium Chloride Spring
- Source temperature
- 20.5℃
- pH
- 7.5
- Flow rate
- 330 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2009-04-17
- Analyst organization
- 財団法人 北海道薬剤師会公衆衛生検査センター
- Registration No.
- 北海道第2号
Cations
- Sodium ion Na⁺
- 562 mg/kg
- Potassium ion K⁺
- 19.1 mg/kg
- Ammonium ion NH₄⁺
- 0.00 mg/kg
- Magnesium ion Mg²⁺
- 31.0 mg/kg
- Calcium ion Ca²⁺
- 64.4 mg/kg
- Aluminum ion Al³⁺
- not detected
- Manganese ion Mn²⁺
- 0.10 mg/kg
- Iron(II) ion Fe²⁺
- 0.20 mg/kg
- Iron(III) ion Fe³⁺
- 0.00 mg/kg
- Zinc ion Zn²⁺
- 0.03 mg/kg
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- not detected
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 0.68 mg/kg
Anions
- Fluoride ion F⁻
- 0.20 mg/kg
- Chloride ion Cl⁻
- 937 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.20 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 99.4 mg/kg
- Bicarbonate ion HCO₃⁻
- 91.5 mg/kg
- Carbonate ion CO₃²⁻
- 0.00 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.40 mg/kg
- Total anions
- 1.1 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 60.8 mg/kg
- Metaboric acid HBO₂
- 0.60 mg/kg
- Total undissociated
- 0.06 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 15.8 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.02 mg/kg
Totals
- Total dissolved substances
- 1.9 mg/kg
- Component total
- 1.9 mg/kg
- Evaporation residue
- 1.7 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
