Tsurumaki Onsen (Hadano No. 12)
Analysis VerifiedTsurumaki Onsen's history began in 1889 when local well water, unsuitable for drinking or irrigation, was repurposed for bathing. [8] Gushing from deep within the Tanzawa Mountains, this source is classified as a non-volcanic spring and is known nationwide for its rare, calcium-rich composition. [14] Following the opening of the Odakyu Line in the early Showa era, it rapidly developed as an accessible retreat from Tokyo, attracting numerous visitors for therapeutic stays. [14, 22]
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
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.
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.
This weakly alkaline chloride spring helps prevent post-bath chills as salt adheres to the skin, retaining warmth. For lasting moisture, avoid rinsing off after your bath. Refrain from prolonged soaking and remember to stay hydrated.
With a pH of 7.7, this spring contains 160.5 mg/kg of calcium ions and 539.0 mg/kg of chloride ions. A "salt veil" envelops the body, preventing chills, making it ideal for those with poor circulation. It's also beneficial for cuts and dry skin, offering relief on days your skin needs extra care.
Avoid bathing during active phases of illness or if you have severe heart or kidney disease. Bathing after consuming alcohol is dangerous and should be avoided. Remember to hydrate before and after your bath.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- 鶴巻温泉 (秦野 第12号)
- Spring type
- ナトリウム・カルシウム－塩化物冷鉱泉
- Source temperature
- 20.6℃
- pH
- 7.7
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2021-01-08
- Analyst organization
- 株式会社 エオネックス
- Registration No.
- 石川県登録 第3号
Cations
- Lithium ion Li⁺
- 0.00 mg/kg
- Sodium ion Na⁺
- 230 mg/kg
- Potassium ion K⁺
- 2.1 mg/kg
- Ammonium ion NH₄⁺
- 0.00 mg/kg
- Magnesium ion Mg²⁺
- 7.4 mg/kg
- Calcium ion Ca²⁺
- 161 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 0.00 mg/kg
- Iron(II) ion Fe²⁺
- 0.00 mg/kg
- Iron(III) ion Fe³⁺
- 0.00 mg/kg
- Strontium ion Sr²⁺
- 0.00 mg/kg
- Barium ion Ba²⁺
- 0.00 mg/kg
- Total cations
- 0.40 mg/kg
Anions
- Fluoride ion F⁻
- 0.00 mg/kg
- Chloride ion Cl⁻
- 539 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.30 mg/kg
- Sulfate ion SO₄²⁻
- 45.3 mg/kg
- Bicarbonate ion HCO₃⁻
- 98.4 mg/kg
- Carbonate ion CO₃²⁻
- 0.40 mg/kg
- Bromide ion Br⁻
- 1.7 mg/kg
- Iodide ion I⁻
- 0.10 mg/kg
- Sulfide ion S²⁻
- 0.00 mg/kg
- Total anions
- 0.69 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- 0.00 mg/kg
- Metasilicic acid H₂SiO₃
- 58.4 mg/kg
- Metaboric acid HBO₂
- 1.5 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 14.8 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
Totals
- Total dissolved substances
- 1.1 mg/kg
- Component total
- 1.2 mg/kg
- Evaporation residue
- 1.3 mg/kg
Usage
- Heating
- Yes（To heat the water to a suitable temperature for bathing.）
- Dilution
- Yes（Equipped for adding water in case of emergencies.）
- Recycle / Filter
- Recycled / For hygiene management and effective use of hot spring resources.
- Additives
- No
- Disinfection
- Yes（Chlorine-based chemicals are used for hygiene management.）
Indications & Contraindications
- Bathing indications
- Chronic pain or stiffness in muscles and joints (chronic phase of rheumatoid arthritis, osteoarthritis, low back pain, neuralgia, frozen shoulder, bruises, sprains, etc.), Muscle stiffness due to motor paralysis, Poor circulation, Peripheral circulatory failure, Gastrointestinal dysfunction (stomach upset, intestinal gas, etc.), High blood pressure (mild), Impaired glucose tolerance (diabetes), Dyslipidemia (mild), Mild asthma or emphysema, Hemorrhoid pain, Autonomic instability, Symptoms caused by stress (insomnia, depression, etc.), Post-illness recovery, Fatigue recovery, Health promotion, Cuts and grazes, Depression, Xeroderma
- Contraindications
- Active phases of illness (especially with fever), active tuberculosis, advanced malignant tumors or severe anemia with significant physical decline, severe heart or lung disease causing shortness of breath with slight movement, severe kidney disease with swelling, gastrointestinal bleeding, visible bleeding, acute exacerbation of chronic illness.
Drinking
- Drinkability
- Not drinkable
Motoyu Jinya
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