Shima Onsen Chojokan-no-yu and Tsubataya-no-yu No.1 Mixed Spring
Analysis UnverifiedShima Onsen is said to take its name from healing "forty thousand ailments," and this water blends two naturally flowing sources from its Yamaguchi district in a mixing tank. Sodium (about 59 percent) and calcium (about 38 percent) lead the cations, while chloride (64 percent) and sulfate (30 percent) dominate the anions. It pairs the warmth of salt with the moist softness of sulfate, clear and easy-going at a gentle 1.42 g/kg, a quietly embracing water beside the Shima River gorge.
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.
- Chloride (salt)456 mg/kg
- Feel
- Tastes salty; the warmth lasts after you get out.
- Said to
- Salt is said to form a film on the skin that keeps in heat and moisture. Bathing indications include cuts, poor circulation and dry skin.
- Note
- May sting cuts. Strong salty water can tire you—avoid long soaks.
- Sulfate287 mg/kg
- Feel
- Your skin feels moist; the water may taste slightly bitter.
- Said to
- Said to retain heat well and help heal cuts. Bathing indications include cuts and dry skin.
- Note
- It warms you well—do not stay in too long.
- Metasilicic acid100 mg/kg
- Feel
- Your skin may feel smoother.
- Said to
- 50 mg/kg or more is said to mark a “skin-beautifying spring”; it is also used in skincare.
- Note
- The “skin-beautifying” label is a common rule of thumb, not a legal standard.
- Source temperature48.2℃
- Feel
- The source is 42°C or hotter; the bath may be on the hot side.
- Said to
- Heat is said to boost circulation and warm the body.
- Note
- Older people and those with high blood pressure or heart conditions should avoid baths of 42°C or more. Keep soaks short.
Effects are general descriptions based on the Ministry of the Environment’s indications by spring type, not a guarantee.
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 a near-neutral pH 7.5 the water is gentle on skin. Rinse only lightly afterward to keep the chloride's warmth, dry off promptly, and check each pool's temperature since the source is 48.2°C.
With 456 mg/kg of chloride forming a light salt film, the water may offer restorative warmth, while 287 mg/kg of sulfate and 155 mg/kg of calcium are traditionally associated with helping relieve pain in stiff shoulders and knees.
The source is 48.2°C, so check the temperature before entering. The water warms you quickly, so avoid long soaks and drink water before and after bathing.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Shima Onsen Chojokan-no-yu and Tsubataya-no-yu No.1 Mixed Spring
- Spring type
- Sodium-Calcium Chloride and Sulfate Hot Spring
- Source temperature
- 48.2℃
- pH
- 7.5
- Flow type
- 自然湧出
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2016-04-07
- Analyst organization
- 一般社団法人群馬県薬剤師会
- Registration No.
- 群馬薬第2号
Cations
- Sodium ion Na⁺
- 275 mg/kg
- Potassium ion K⁺
- 19.7 mg/kg
- Magnesium ion Mg²⁺
- 2.3 mg/kg
- Calcium ion Ca²⁺
- 155 mg/kg
- Aluminum ion Al³⁺
- < 0.05 mg/kg
- Manganese ion Mn²⁺
- 0.10 mg/kg
- Iron(II) ion Fe²⁺
- 0.04 mg/kg
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- not detected
- Total cations
- 452 mg/kg
Anions
- Fluoride ion F⁻
- 0.50 mg/kg
- Chloride ion Cl⁻
- 456 mg/kg
- Sulfate ion SO₄²⁻
- 287 mg/kg
- Bicarbonate ion HCO₃⁻
- 72.4 mg/kg
- Carbonate ion CO₃²⁻
- < 0.1 mg/kg
- Bromide ion Br⁻
- 2.6 mg/kg
- Total anions
- 819 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 100 mg/kg
- Metaboric acid HBO₂
- 37.2 mg/kg
- Total undissociated
- 137 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 15.4 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 15.4 mg/kg
Totals
- Total dissolved substances
- 1410 mg/kg
- Component total
- 1420 mg/kg
- Evaporation residue
- 1420 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
