Ryokan Hinode Onsen
Analysis VerifiedNestled in Kasugai-cho, Fuefuki City, Yamanashi Prefecture, a region renowned for its grape cultivation, this gentle hot spring is a true blessing from the earth, cherished by locals for generations. Its lukewarm waters, around 36.3℃, offer a comfort that invites you to linger indefinitely. The soft, weakly alkaline water delicately envelops the skin, gradually releasing tension from the body's core. It's a soothing retreat for those seeking to alleviate daily fatigue and find deep relaxation in mild waters.
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.
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 a source temperature of 36.3°C close to body heat, this is a classic 'nuruma-yu' (tepid spring) ideal for a long, leisurely soak of 15–20 minutes. The mild alkaline nature is gentle on the skin, and a slow immersion allows the metasilicic acid to work its moisturizing effect. Be sure to rehydrate after your bath.
With a pH of 8.31, this mildly alkaline spring gently softens the skin's surface. Metasilicic acid at 123.4 mg/kg supports skin hydration, while the 36.3°C tepid source temperature allows the whole body to unwind gradually. Particularly recommended for those dealing with fatigue, neuralgia, or muscular aches, as well as anyone seeking relief from everyday stress.
Those with serious conditions such as hypertension, arteriosclerosis, heart disease, or diabetes, as well as those with acute illnesses or malignant tumors, should avoid bathing. Bathing immediately after consuming alcohol is also contraindicated.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Ryokan Hinode Onsen
- Spring type
- Simple hot spring
- Source temperature
- 36.3℃
- pH
- 8.1
- Flow rate
- 75.5 L/min
- Flow type
- Self-flowing
- Osmotic pressure
- Hypotonic
Analysis Document
- Analysis date
- 2009-11-30
- Analyst organization
- 山梨県衛生公害研究所
- Registration No.
- 14山梨み自第2号
Cations
- Lithium ion Li⁺
- 0.00 mg/kg
- Sodium ion Na⁺
- 161 mg/kg
- Potassium ion K⁺
- 9.8 mg/kg
- Ammonium ion NH₄⁺
- 0.00 mg/kg
- Magnesium ion Mg²⁺
- 0.10 mg/kg
- Calcium ion Ca²⁺
- 5.3 mg/kg
- Aluminum ion Al³⁺
- 0.01 mg/kg
- Manganese ion Mn²⁺
- 0.00 mg/kg
- Iron(III) ion Fe³⁺
- 0.01 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⁺
- 0.02 mg/kg
- Copper ion Cu²⁺
- 0.05 mg/kg
- Cadmium ion Cd²⁺
- 0.00 mg/kg
- Total cations
- 0.18 mg/kg
Anions
- Fluoride ion F⁻
- 0.00 mg/kg
- Chloride ion Cl⁻
- 132 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 119 mg/kg
- Bicarbonate ion HCO₃⁻
- 93.1 mg/kg
- Bromide ion Br⁻
- 0.00 mg/kg
- Iodide ion I⁻
- 0.00 mg/kg
- Total anions
- 0.34 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 0.10 mg/kg
- Metasilicic acid H₂SiO₃
- 123 mg/kg
- Metaboric acid HBO₂
- 6.9 mg/kg
- Total undissociated
- 0.13 mg/kg
Dissolved Gas
- Total dissolved gas
- 0.00 mg/kg
Totals
- Total dissolved substances
- 0.65 mg/kg
- Component total
- 0.65 mg/kg
- Evaporation residue
- 0.53 mg/kg
Usage
- Heating
- No
- Dilution
- No
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Autonomic instability, Insomnia, Depression
- General indications
- High blood pressure (mild), Rheumatoid arthritis, 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
