Jozankei Onsen
Analysis VerifiedSince its discovery in 1866 by the ascetic monk Miizumi Jozan, Jozankei Onsen has been cherished as Sapporo's secluded hot spring retreat. Its springs, naturally gushing approximately 8,600 liters per minute from the riverbed near Tsukimibashi and Takayamabashi on the Toyohira River, are colorless, clear, and possess a subtly salty taste. This water envelops the skin like a delicate veil of salt, delivering restorative warmth deep into the body's core. It is highly recommended for those seeking deep relaxation and liberation of mind and body, away from urban clamor, while immersed in the valley's changing seasons.
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.
▸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.
Since the source water gushes out at a very high temperature of 77.5℃, cold water is added to adjust it to a comfortable 40-42℃. The chloride forms a salt film on your skin, keeping you warm long after bathing. It is recommended to gently towel dry without rinsing off the spring water.
This is a gentle, neutral sodium-chloride spring with a pH of 6.4. Containing 926.5mg of sodium ions and 1492mg of chloride ions per kilogram, it provides excellent heat-retaining effects. It is perfect for those suffering from poor circulation or peripheral circulatory failure, leaving you with a lingering warmth.
Please refrain from bathing if you have a fever, active tuberculosis, or severe heart, lung, or kidney conditions. Note that this water is not safe for drinking.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Jozankei Onsen
- Spring type
- ナトリウム－塩化物温泉
- Old spring type name
- 弱食塩泉
- Source temperature
- 77.5℃
- pH
- 6.4
- Flow type
- 自然湧出
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2020-06-09
- Analyst organization
- 日本衛生株式会社
- Registration No.
- 北海道第11号
Cations
- Hydrogen ion H⁺
- 0.00 mg/kg
- Lithium ion Li⁺
- 0.00 mg/kg
- Sodium ion Na⁺
- 927 mg/kg
- Potassium ion K⁺
- 161 mg/kg
- Ammonium ion NH₄⁺
- 1.5 mg/kg
- Magnesium ion Mg²⁺
- 7.5 mg/kg
- Calcium ion Ca²⁺
- 116 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 0.90 mg/kg
- Iron(II) ion Fe²⁺
- 0.20 mg/kg
- Iron(III) ion Fe³⁺
- 0.00 mg/kg
- Zinc ion Zn²⁺
- 0.00 mg/kg
- Lead ion Pb²⁺
- 0.00 mg/kg
- Strontium ion Sr²⁺
- 0.00 mg/kg
- Barium ion Ba²⁺
- 0.00 mg/kg
- Copper ion Cu²⁺
- 0.00 mg/kg
- Cadmium ion Cd²⁺
- 0.00 mg/kg
- Total cations
- 1.2 mg/kg
Anions
- Fluoride ion F⁻
- 1.5 mg/kg
- Chloride ion Cl⁻
- 1492 mg/kg
- Hydroxide ion OH⁻
- 0.00 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 80.9 mg/kg
- Bicarbonate ion HCO₃⁻
- 307 mg/kg
- Carbonate ion CO₃²⁻
- 0.00 mg/kg
- Bromide ion Br⁻
- 3.3 mg/kg
- Iodide ion I⁻
- 0.90 mg/kg
- Hydrogen sulfate HSO₄⁻
- 0.00 mg/kg
- Hydrogen thiosulfate HS₂O₃⁻
- 0.00 mg/kg
- Nitrite ion NO₂⁻
- 0.00 mg/kg
- Nitrate ion NO₃⁻
- 0.00 mg/kg
- Dihydrogen phosphate H₂PO₄⁻
- 0.30 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.00 mg/kg
- Phosphate ion PO₄³⁻
- 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
- Metasilicate ion SiO₃²⁻
- 0.00 mg/kg
- Metaborate ion BO₂⁻
- 0.00 mg/kg
- Total anions
- 1.9 mg/kg
Undissociated Components
- Sulfuric acid H₂SO₄
- 0.00 mg/kg
- Phosphoric acid H₃PO₄
- 0.00 mg/kg
- Arsenious acid HAsO₂
- 4.5 mg/kg
- Metasilicic acid H₂SiO₃
- 144 mg/kg
- Metaboric acid HBO₂
- 140 mg/kg
- Total undissociated
- 0.29 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 79.2 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.08 mg/kg
Trace Components
- Radon Rn
- 0
- Total sulfur S
- 0.00 mg/kg
Totals
- Total dissolved substances
- 3.4 mg/kg
- Component total
- 3.5 mg/kg
- Evaporation residue
- 3.1 mg/kg
Usage
- Heating
- No
- Dilution
- Yes（Cold water is added to adjust the bath temperature to between 40℃ and 42℃.）
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
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
- Drinking notes
- This hot spring is not to be used for drinking.
