Namari Onsen Katsura-no-yu + Shimo-no-yu (mixed)
Analysis UnverifiedNamari Onsen, said to have opened some 600 years ago, is the single-inn spa of the Hanamaki Minami hot spring area. Legend tells of a white monkey bathing in water welling up at the foot of a katsura tree, remembered in the names of the Katsura-no-yu source and the naturally gushing Hakuen-no-yu rock bath. Fuji San Ryokan, founded in 1841, uses several sources bath by bath. This analysis covers a blend in which the cooler Shimo-no-yu is added to the hotter Katsura-no-yu to reach a comfortable temperature, feeding baths such as Shiraito-no-yu overlooking the Shiraito Falls. The weakly alkaline water feels smooth and invites deep relaxation to the sound of the river.
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").
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.
Each bath uses different sources and temperatures, and some are quite hot. Pour water over yourself first, check the temperature, and take several shorter soaks.
This mild pH 8.2 simple spring with 47.6 mg/kg metasilicic acid is gentle on the body, suiting days when you seek deep relaxation and silky skin.
The source is around 48°C and some baths exceed 44°C. One rock bath is deep and entered standing, so watch your footing and the temperature, and avoid overlong soaks.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Namari Onsen Katsura-no-yu + Shimo-no-yu (mixed)
- Spring type
- Simple Hot Spring
- Source temperature
- 48.2℃
- pH
- 8.2
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2023-11-07
- Analyst organization
- 一般財団法人岩手県薬剤師会検査センター
- Registration No.
- 岩手県第7号
Cations
- Hydrogen ion H⁺
- < 0.1 mg/kg
- Lithium ion Li⁺
- 0.10 mg/kg
- Sodium ion Na⁺
- 103 mg/kg
- Potassium ion K⁺
- 1.4 mg/kg
- Ammonium ion NH₄⁺
- < 0.1 mg/kg
- Magnesium ion Mg²⁺
- < 0.1 mg/kg
- Calcium ion Ca²⁺
- 7.0 mg/kg
- Aluminum ion Al³⁺
- < 0.1 mg/kg
- Manganese ion Mn²⁺
- < 0.1 mg/kg
- Iron(II) ion Fe²⁺
- < 0.1 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Copper ion Cu²⁺
- < 0.01 mg/kg
- Cadmium ion Cd²⁺
- < 0.003 mg/kg
- Total cations
- 0.11 mg/kg
Anions
- Fluoride ion F⁻
- 3.0 mg/kg
- Chloride ion Cl⁻
- 31.3 mg/kg
- Hydrogen sulfide ion HS⁻
- < 0.1 mg/kg
- Thiosulfate ion S₂O₃²⁻
- < 0.1 mg/kg
- Sulfate ion SO₄²⁻
- 124 mg/kg
- Bicarbonate ion HCO₃⁻
- 76.9 mg/kg
- Carbonate ion CO₃²⁻
- 4.4 mg/kg
- Total anions
- 0.24 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 47.6 mg/kg
- Metaboric acid HBO₂
- 2.9 mg/kg
- Total undissociated
- 0.05 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 0.80 mg/kg
- Free hydrogen sulfide H₂S
- < 0.1 mg/kg
- Total dissolved gas
- 0.00 mg/kg
Trace Components
- Radon Rn
- 5.29 Bq/kg
Totals
- Total dissolved substances
- 0.39 mg/kg
- Component total
- 0.40 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
