Jihou Onsen Awa-no-Yu Source
Analysis UnverifiedThis source is said to have been drilled by a former well-boring contractor on spare land beside his home, seeking water for his own recovery. From 1,200 m down it is piped straight into the bottom of the baths without touching air, so fine bubbles swirl constantly and cling to the skin. Faintly amber, with an iron scent and a hint of salt, its temperature around 40°C invites long, unhurried soaks for those who enjoy the fizzy touch.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
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.
At 40.7°C the source keeps the baths around 37-38°C, ideal for long, relaxed soaks. Stay still and fine bubbles will gather on your skin.
With 1,863 mg/kg of chloride, the water leaves a fine salt film on the skin that may support Restorative warmth after bathing. Its mild temperature and bubbly touch make long soaks a path to Deep relaxation.
The mild water invites long soaks, so drink water often. It contains salt, so sensitive skin may benefit from a quick rinse afterward.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Jihou Onsen Awa-no-Yu Source
- Spring type
- Sodium Chloride Hot Spring
- Source temperature
- 40.7℃
- pH
- 8
- Flow rate
- 330 L/min
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2012-04-24
- Analyst organization
- 社団法人新潟県環境衛生中央研究所
- Registration No.
- 新潟県(登)環企第5号
Cations
- Lithium ion Li⁺
- 0.10 mg/kg
- Sodium ion Na⁺
- 1274 mg/kg
- Potassium ion K⁺
- 80.9 mg/kg
- Ammonium ion NH₄⁺
- 19.1 mg/kg
- Magnesium ion Mg²⁺
- 9.5 mg/kg
- Calcium ion Ca²⁺
- 28.4 mg/kg
- Aluminum ion Al³⁺
- < 0.1 mg/kg
- Manganese ion Mn²⁺
- 0.10 mg/kg
- Iron(II) ion Fe²⁺
- 0.60 mg/kg
- Iron(III) ion Fe³⁺
- < 0.1 mg/kg
- Lead ion Pb²⁺
- < 0.005 mg/kg
- Strontium ion Sr²⁺
- 0.30 mg/kg
- Barium ion Ba²⁺
- 0.10 mg/kg
- Copper ion Cu²⁺
- < 0.1 mg/kg
- Cadmium ion Cd²⁺
- < 0.005 mg/kg
- Total cations
- 1.4 mg/kg
Anions
- Fluoride ion F⁻
- 0.40 mg/kg
- Chloride ion Cl⁻
- 1863 mg/kg
- Hydrogen sulfide ion HS⁻
- < 0.1 mg/kg
- Thiosulfate ion S₂O₃²⁻
- < 0.1 mg/kg
- Sulfate ion SO₄²⁻
- < 5 mg/kg
- Bicarbonate ion HCO₃⁻
- 689 mg/kg
- Carbonate ion CO₃²⁻
- 5.2 mg/kg
- Bromide ion Br⁻
- 10.9 mg/kg
- Iodide ion I⁻
- 6.2 mg/kg
- Hydrogen sulfate HSO₄⁻
- < 5 mg/kg
- Sulfide ion S²⁻
- < 0.1 mg/kg
- Total anions
- 2.6 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- < 0.1 mg/kg
- Metasilicic acid H₂SiO₃
- 119 mg/kg
- Metaboric acid HBO₂
- 2.6 mg/kg
- Total undissociated
- 0.12 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 11.6 mg/kg
- Free hydrogen sulfide H₂S
- < 0.1 mg/kg
Totals
- Total dissolved substances
- 4.1 mg/kg
- Component total
- 4.1 mg/kg
Usage
- Heating
- No
- Dilution
- No
- 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
