Takinoyu, Ryugu-no-yu and Asahi-no-yu (mixed)
Analysis UnverifiedShima Onsen takes its name from the legend that it could cure "forty thousand ailments," and its hot water rises close to the bed of the Shinyu River. This blend gathers three springs, Takinoyu, Ryugu-no-yu and Asahi-no-yu, which emerge at over 76°C. It pairs the lasting warmth of a chloride spring with the softness of a sulfate spring, clear in color with a faint gypsum scent. Long cherished as a spring for the stomach, with a living tradition of drinking the water, it carries both the purity and the strength of a valley 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 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.
The source exceeds 76°C, so it is cooled with added water before reaching the tubs. The area near the spout can still be hot, so pour water over yourself first; the neutral water is gentle, so skip a heavy rinse afterward.
With 1002 mg/kg of chloride wrapping the skin, the water offers restorative warmth, while 355 mg/kg of sulfate and 148 mg/kg of calcium are traditionally valued for soothing skin; 175 mg/kg of metasilicic acid adds a silky after-bath feel.
The water warms strongly, so avoid overly long soaks and drink water often. The source contains arsenic, so if you drink it, follow the posted guidance at the drinking fountain and keep to the stated amount.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Takinoyu, Ryugu-no-yu and Asahi-no-yu (mixed)
- Spring type
- Sodium-Calcium Chloride and Sulfate Hot Spring
- Source temperature
- 76.1℃
- pH
- 6.69
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2004-09-27
Cations
- Sodium ion Na⁺
- 615 mg/kg
- Potassium ion K⁺
- 78.4 mg/kg
- Magnesium ion Mg²⁺
- 1.7 mg/kg
- Calcium ion Ca²⁺
- 148 mg/kg
- Aluminum ion Al³⁺
- 0.10 mg/kg
- Manganese ion Mn²⁺
- 1.0 mg/kg
- Iron(II) ion Fe²⁺
- 0.25 mg/kg
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- not detected
- Total cations
- 0.84 mg/kg
Anions
- Fluoride ion F⁻
- 1.0 mg/kg
- Chloride ion Cl⁻
- 1002 mg/kg
- Sulfate ion SO₄²⁻
- 355 mg/kg
- Bicarbonate ion HCO₃⁻
- 52.8 mg/kg
- Bromide ion Br⁻
- 7.0 mg/kg
- Iodide ion I⁻
- 0.80 mg/kg
- Total anions
- 1.4 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 175 mg/kg
- Metaboric acid HBO₂
- 76.3 mg/kg
- Total undissociated
- 0.25 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 13.2 mg/kg
- Total dissolved gas
- 0.01 mg/kg
Totals
- Total dissolved substances
- 2.5 mg/kg
- Component total
- 2.5 mg/kg
- Evaporation residue
- 2.5 mg/kg
Usage
- Heating
- No
- Dilution
- Yes
- 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
