Jozankei Onsen (Mixed)
Analysis VerifiedTwo naturally gushing sources beneath the Toyohira River's streambed at the heart of Jozankei's thermal district are blended together and utilized by acclaimed inns such as Nukumori-no-Yado Furukawa. Drawing from the distinctive riverbed and riverbank springs that characterize Jozankei Onsen, this precious water rises without mechanical pumping, preserving its fresh mineral essence. Emerging near the surface, the mineral composition remains remarkably intact, offering bathers a silken warmth that penetrates deep and soothes thoroughly.
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 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.
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.
Rich in salt content, after bathing simply pat yourself dry with a towel rather than rinsing off with shower water—this locks in the warming effect for hours longer. Since rapid immersion in hot water may cause dizziness, bathe mindfully for shorter intervals to allow your body to acclimate gently.
This sodium chloride spring, boasting over 3.5g/kg in total mineral content, deposits a thin protective saline film across the skin, preventing heat loss long after bathing. Particularly beneficial for those suffering from poor circulation, stiff joints, and chronic muscle tension, it warms you from your core outward with a penetrating, lingering heat that relieves deep-seated discomfort.
Those with acute illness, active tuberculosis, or severe heart disease should refrain from bathing. Avoid entering hot water immediately before meals or after alcohol consumption.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- 定山渓温泉
- Spring type
- ナトリウム-塩化物温泉
- Old spring type name
- 弱食塩泉
- Source temperature
- 64.9℃
- pH
- 7.2
- Flow type
- 自然湧出
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2012-02-07
- Analyst organization
- 北海道立衛生研究所
- Registration No.
- 北海道第1号
Cations
- Sodium ion Na⁺
- 943 mg/kg
- Potassium ion K⁺
- 145 mg/kg
- Ammonium ion NH₄⁺
- 0.30 mg/kg
- Magnesium ion Mg²⁺
- 6.8 mg/kg
- Calcium ion Ca²⁺
- 117 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 0.90 mg/kg
- Iron(II) ion Fe²⁺
- 0.10 mg/kg
- Zinc ion Zn²⁺
- 0.00 mg/kg
- Lead ion Pb²⁺
- 0.00 mg/kg
- Cadmium ion Cd²⁺
- 0.00 mg/kg
- Total cations
- 1.2 mg/kg
Anions
- Fluoride ion F⁻
- 0.50 mg/kg
- Chloride ion Cl⁻
- 1623 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 87.2 mg/kg
- Bicarbonate ion HCO₃⁻
- 287 mg/kg
- Carbonate ion CO₃²⁻
- 0.30 mg/kg
- Total anions
- 2.0 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 4.7 mg/kg
- Metasilicic acid H₂SiO₃
- 114 mg/kg
- Metaboric acid HBO₂
- 173 mg/kg
- Total undissociated
- 0.29 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 34.5 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.03 mg/kg
Trace Components
- Radon Rn
- 0.07 マッヘ単位/kg
Totals
- Total dissolved substances
- 3.5 mg/kg
- Component total
- 3.5 mg/kg
- Evaporation residue
- 3.3 mg/kg
Usage
- Heating
- No
- Dilution
- No
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Neuralgia, Muscle pain, Joint pain, Frozen shoulder, Motor paralysis, Joint stiffness, Recovery from fatigue, Chronic gastrointestinal disease, Bruises, Sprains, Hemorrhoids, Poor circulation, Convalescence, Health promotion, Frail children, Chronic skin disease, Burns, Cuts and grazes, Chronic gynecological disease
- Drinking indications
- Chronic gastrointestinal disease, Constipation
- Contraindications
- Acute diseases (especially with fever), Malignant tumors, Severe heart disease, Respiratory failure, Renal failure, Bleeding disorders, Active tuberculosis, Severe anemia, Other generally progressing diseases, Pregnancy (especially early and late stages). (For drinking: Kidney disease, High blood pressure, Other conditions causing general swelling.)
Drinking
- Drinkability
- Drinkable
- Drinking notes
- It is recommended to consult a doctor before drinking the spring water.
