Yugawara Onsen Mixed Source (Gongenyama Service Center)
Analysis UnverifiedYugawara Onsen, sung of in the Man'yoshu as the water that "springs forth in the valley of Dohi in Ashigari," is one of Japan's oldest recorded hot springs. The Yugawara Onsen Mixed Source (Gongenyama Service Center) blends several of the town's wells into a single supply at 61.7°C and pipes it to inns across the resort. Its chloride and sulfate content gives a soft, enveloping feel, and warmth lingers on the skin long after bathing, suiting travelers who seek quiet recovery in the hills.
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.
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.
With the source emerging at 61.7°C, check the bath temperature first and take several short soaks if it feels hot. Chloride water retains heat well, so drink water afterward and rest a while before moving on.
With 563 mg/kg of chloride coating the skin, this spring is traditionally associated with restorative warmth that lingers long after the bath. Its 326 mg/kg of sulfate and weakly alkaline pH 8.3 may support those seeking to relieve pain from stiff shoulders and lower backs after long days at a desk.
The source is hot at 61.7°C. Long soaks in hot water can cause dizziness or dehydration, so keep baths short and adjust to your condition.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Yugawara Onsen Mixed Source (Gongenyama Service Center)
- Spring type
- Sodium-Calcium Chloride and Sulfate Hot Spring
- Old spring type name
- 含石膏-食塩泉
- Source temperature
- 61.7℃
- pH
- 8.3
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2019-11-25
- Analyst organization
- 神奈川県温泉地学研究所
- Registration No.
- 神奈川県知事登録第1号
Cations
- Lithium ion Li⁺
- 0.26 mg/kg
- Sodium ion Na⁺
- 374 mg/kg
- Potassium ion K⁺
- 24.0 mg/kg
- Magnesium ion Mg²⁺
- 0.73 mg/kg
- Calcium ion Ca²⁺
- 109 mg/kg
- Aluminum ion Al³⁺
- 0.04 mg/kg
- Manganese ion Mn²⁺
- 0.01 mg/kg
- Iron(II) ion Fe²⁺
- 0.03 mg/kg
- Zinc ion Zn²⁺
- 0.00 mg/kg
- Lead ion Pb²⁺
- 0.00 mg/kg
- Strontium ion Sr²⁺
- 0.61 mg/kg
- Copper ion Cu²⁺
- 0.00 mg/kg
- Cadmium ion Cd²⁺
- 0.00 mg/kg
- Total cations
- 0.51 mg/kg
Anions
- Fluoride ion F⁻
- 0.73 mg/kg
- Chloride ion Cl⁻
- 563 mg/kg
- Sulfate ion SO₄²⁻
- 326 mg/kg
- Bicarbonate ion HCO₃⁻
- 30.6 mg/kg
- Carbonate ion CO₃²⁻
- 0.47 mg/kg
- Bromide ion Br⁻
- 1.7 mg/kg
- Nitrate ion NO₃⁻
- 1.0 mg/kg
- Hydrogen metasilicate HSiO₃⁻
- 3.8 mg/kg
- Metaborate ion BO₂⁻
- 1.2 mg/kg
- Total anions
- 0.93 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 97.1 mg/kg
- Metaboric acid HBO₂
- 9.8 mg/kg
- Total undissociated
- 0.11 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 0.26 mg/kg
- Total dissolved gas
- 0.00 mg/kg
Totals
- Total dissolved substances
- 1.5 mg/kg
- Component total
- 1.5 mg/kg
- Evaporation residue
- 1.6 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
