Tochiomata No. 1
Analysis UnverifiedTochiomata Onsen, in the mountains of Uonuma, is the oldest healing retreat of the Yunotani hot spring area; said to have been found some 1,200 years ago, it is known for the saying "bathe for a week and you won't catch a cold for a year." Tochiomata No. 1 rises naturally from granite ground at around 35°C and flows, unheated and undiluted, into the three shared "sacred spring" baths, Shita-no-Yu, Ue-no-Yu and Oku-no-Yu. Shita-no-Yu sits directly above the source, and the old custom of soaking quietly for one to two hours lives on.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
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.
The water is close to body temperature, so the traditional way is to soak slowly for one to two hours. Radon from radioactive springs is also taken in by breathing, so relax and breathe quietly near the surface, and warm up in the heated rinse tub before getting out.
With 684.5 Bq/kg of radon, this radioactive spring has long been traditionally associated with helping relieve pain, and its smooth pH 8.6 alkaline water, close to body temperature, invites long soaks that may support immune system stimulation and deep calm.
Even lukewarm water takes energy during very long soaks, so rest and drink water along the way, and skip bathing if you feel unwell or bath-fatigued.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Tochiomata No. 1
- Spring type
- Simple Hot Spring
- Source temperature
- 35.4℃
- pH
- 8.6
- Flow rate
- 101 L/min
- Flow type
- 自然湧出
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2003-09-08
- Analyst organization
- 財団法人新潟県環境分析センター
- Registration No.
- 新潟県（登）環企第4号
Cations
- Lithium ion Li⁺
- 0.00 mg/kg
- Sodium ion Na⁺
- 33.5 mg/kg
- Potassium ion K⁺
- 0.80 mg/kg
- Ammonium ion NH₄⁺
- 0.00 mg/kg
- Magnesium ion Mg²⁺
- 0.20 mg/kg
- Calcium ion Ca²⁺
- 37.2 mg/kg
- Aluminum ion Al³⁺
- 0.00 mg/kg
- Manganese ion Mn²⁺
- 0.00 mg/kg
- Iron(II) ion Fe²⁺
- 0.00 mg/kg
- Zinc ion Zn²⁺
- 0.00 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Strontium ion Sr²⁺
- 0.10 mg/kg
- Barium ion Ba²⁺
- 0.00 mg/kg
- Copper ion Cu²⁺
- 0.00 mg/kg
- Cadmium ion Cd²⁺
- < 0.005 mg/kg
- Total cations
- 0.07 mg/kg
Anions
- Fluoride ion F⁻
- 0.60 mg/kg
- Chloride ion Cl⁻
- 14.2 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 90.0 mg/kg
- Bicarbonate ion HCO₃⁻
- 58.9 mg/kg
- Carbonate ion CO₃²⁻
- 6.0 mg/kg
- Bromide ion Br⁻
- 0.00 mg/kg
- Iodide ion I⁻
- 0.00 mg/kg
- Nitrite ion NO₂⁻
- 0.00 mg/kg
- Nitrate ion NO₃⁻
- 0.00 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.00 mg/kg
- Total anions
- 0.17 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 22.5 mg/kg
- Total undissociated
- 0.02 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 0.00 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.00 mg/kg
Trace Components
- Radon Rn
- 684.5 Bq/kg
Totals
- Total dissolved substances
- 0.26 mg/kg
- Component total
- 0.26 mg/kg
- Evaporation residue
- 0.26 mg/kg
Usage
- Usage status
- Unknown
Indications & Contraindications
- Bathing indications
- Hyperuricemia (gout), Rheumatoid arthritis, Ankylosing spondylitis
- General indications
- High blood pressure (mild), Autonomic instability, Insomnia, Depression, 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), Undergoing radiation therapy, pregnancy (radioactive springs)
Drinking
- Drinkability
- Not drinkable
