Atagoyama Sengen
Analysis VerifiedThe Atagoyama Sengen, gushing forth in Arima Onsen—one of Japan's three ancient hot springs—is a prime example of the "Kinsen" (gold spring), which turns a vivid reddish-brown upon contact with air. Its history is deep, having long supported the therapeutic bathing culture of Arima. The water from this source, rich in salt and iron, offers a powerful warmth that heats the body to its core. Steeping in this bath envelops you in a warmth that feels infused with the earth's blessings, a sensation that lingers long after you emerge.
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.
Salinity comparable to seawater. The salt film traps heat for outstanding warmth ("hot bath spring").
Salt forms a thin film on the skin, retaining heat after bathing. Helps with poor circulation.
Absorbed through the skin to gently calm nervous tension, leaving deep relaxation after the bath.
A rare radioactive spring where trace radiation absorbed via inhalation and skin is expected to stimulate cells (the "hormesis effect").
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.
As the source is extremely hot at 96.6°C, it is cooled to a suitable temperature at the facility. Due to the very high salt concentration, it's recommended to rinse off lightly with fresh water after bathing, especially for those with sensitive skin. Avoid long soaks and remember to stay hydrated.
As one of Japan's leading chloride springs with 30,600 mg/kg of chloride ions, it creates a salt veil on the skin, offering excellent restorative warmth that prevents post-bath chills. This effect is traditionally associated with relieving poor circulation. Furthermore, the abundant iron content may support rejuvenation as part of a balneotherapy regimen.
Due to its very high salt concentration, individuals with sensitive skin or open cuts may feel a stinging sensation. As a high-temperature, hypertonic spring, it is wise to start with shorter bathing times.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Atagoyama Sengen
- Spring type
- Iron-containing Sodium Chloride and 強塩高 Hot Spring
- Source temperature
- 96.6℃
- pH
- 6.14
- Flow rate
- 58 L/min
- Flow type
- 掘削自噴
- Osmotic pressure
- 高張性
Analysis Document
- Analysis date
- 2017-03-23
- Analyst organization
- 兵庫県立健康生活科学研究所
- Registration No.
- 薬第02E-0001号
Cations
- Lithium ion Li⁺
- 46.5 mg/kg
- Sodium ion Na⁺
- 13800 mg/kg
- Potassium ion K⁺
- 3220 mg/kg
- Magnesium ion Mg²⁺
- 23.6 mg/kg
- Calcium ion Ca²⁺
- 2900 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 32.2 mg/kg
- Iron(II) ion Fe²⁺
- 48.5 mg/kg
- Zinc ion Zn²⁺
- 1.6 mg/kg
- Strontium ion Sr²⁺
- 50.4 mg/kg
- Barium ion Ba²⁺
- 40.2 mg/kg
- Total cations
- 20.2 mg/kg
Anions
- Fluoride ion F⁻
- 2.8 mg/kg
- Chloride ion Cl⁻
- 30600 mg/kg
- Sulfate ion SO₄²⁻
- 0.20 mg/kg
- Bicarbonate ion HCO₃⁻
- 465 mg/kg
- Bromide ion Br⁻
- 57.4 mg/kg
- Iodide ion I⁻
- 0.40 mg/kg
- Total anions
- 31.1 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 297 mg/kg
- Metaboric acid HBO₂
- 388 mg/kg
- Total undissociated
- 0.69 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 565 mg/kg
- Total dissolved gas
- 0.56 mg/kg
Trace Components
- Radon Rn
- 44.1 Bq/kg
Totals
- Total dissolved substances
- 52.6 mg/kg
- Component total
- 53.2 mg/kg
- Evaporation residue
- 51.0 mg/kg
Usage
- Heating
- No
- Dilution
- Yes（To lower the temperature of the hot spring water.）
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Cuts and grazes, Peripheral circulatory failure, Poor circulation, Depression, Xeroderma, Chronic pain or stiffness in muscles and joints (chronic phase of conditions such as rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains), Muscle stiffness due to motor paralysis, Poor circulation, Gastrointestinal dysfunction (stomach heaviness, intestinal gas), High blood pressure (mild), Impaired glucose tolerance (diabetes), Dyslipidemia, Mild asthma or emphysema, Hemorrhoids, Autonomic instability, Stress-related symptoms (insomnia, depression), Post-illness recovery, Fatigue recovery, Health promotion, 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), Active stages of illness (especially with fever), active tuberculosis, advanced malignant tumors or severe anemia where physical debilitation is significant, severe heart or lung diseases that cause shortness of breath with slight movement, severe kidney diseases with swelling, gastrointestinal bleeding, visible bleeding, and acute exacerbation of chronic diseases.
Drinking
- Drinkability
- Not drinkable
