Kuronagi Onsen
Analysis VerifiedDiscovered in 1645 by a villager named Tarozaemon, Kuronagi Onsen is a historic source gushing along the Kuronagi River in the Kurobe Gorge. Once a hidden retreat for the Kaga Domain during the Edo period, this abundant source now pipes its waters 7 kilometers downstream to supply all facilities in Unazuki Onsen town.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
Mild antibacterial action keeps the skin clean. Trace transdermal absorption supports tooth and bone health.
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.
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 the source reaching 98.3°C, pure water is added to adjust the temperature for a safe bath. Because it is a weakly alkaline simple spring, the water is gentle on the skin, allowing for longer, deeply warming soaks without easily causing bath fatigue.
Featuring a mild dissolved substance total of 542 mg/kg, this simple spring is perfectly safe for everyone from the elderly to those with sensitive skin. The 148 mg/kg of sodium ions gently envelop the body, making it ideal for those troubled by daily fatigue or poor circulation.
Please avoid bathing if you have a fever, severe heart or lung conditions, or advanced malignancies. The elderly and those with high blood pressure should avoid high-temperature baths.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- 黒薙温泉
- Spring type
- 単純温泉（低張性・弱アルカリ性・高温泉）
- Source temperature
- 98.3℃
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2014-10-03
- Analyst organization
- 富山県衛生研究所
- Registration No.
- 富山-01
Cations
- Lithium ion Li⁺
- 0.62 mg/kg
- Sodium ion Na⁺
- 148 mg/kg
- Potassium ion K⁺
- 8.1 mg/kg
- Ammonium ion NH₄⁺
- 0.52 mg/kg
- Calcium ion Ca²⁺
- 10.5 mg/kg
- Aluminum ion Al³⁺
- 0.11 mg/kg
- Lead ion Pb²⁺
- 0.00 mg/kg
- Strontium ion Sr²⁺
- 0.21 mg/kg
- Copper ion Cu²⁺
- 0.00 mg/kg
- Total cations
- 0.17 mg/kg
Anions
- Fluoride ion F⁻
- 8.2 mg/kg
- Chloride ion Cl⁻
- 129 mg/kg
- Sulfate ion SO₄²⁻
- 33.2 mg/kg
- Bicarbonate ion HCO₃⁻
- 155 mg/kg
- Bromide ion Br⁻
- 0.38 mg/kg
- Hydrogen metasilicate HSiO₃⁻
- 1.0 mg/kg
- Metaborate ion BO₂⁻
- 0.50 mg/kg
- Total anions
- 0.33 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 39.8 mg/kg
- Metaboric acid HBO₂
- 6.6 mg/kg
- Total undissociated
- 0.05 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 11.9 mg/kg
- Total dissolved gas
- 0.01 mg/kg
Totals
- Total dissolved substances
- 0.54 mg/kg
- Component total
- 0.55 mg/kg
Usage
- Heating
- No
- Dilution
- Yes（Water is added because the source temperature is high.）
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- No
Indications & Contraindications
- Bathing indications
- Chronic pain or stiffness in muscles and joints (Rheumatoid arthritis, osteoarthritis, lumbago, neuralgia, frozen shoulder, chronic phase of bruises and sprains), Muscle stiffness due to motor paralysis, Poor circulation, Peripheral circulatory failure, Gastrointestinal dysfunction (heavy stomach, intestinal gas, etc.), High blood pressure (mild), Impaired glucose tolerance (diabetes), Dyslipidemia (mild), Mild asthma or emphysema, Hemorrhoidal pain, Autonomic instability, Stress-related symptoms (sleep disorders, depression, etc.), Convalescence, Recovery from fatigue, Health promotion, Insomnia, Depression
- Contraindications
- Active phase of disease (especially with fever), active tuberculosis, significant physical debilitation such as advanced malignant tumors or severe anemia, severe heart or lung disease causing shortness of breath with slight movement, severe kidney disease with edema, gastrointestinal bleeding, visible bleeding, acute exacerbation of chronic disease
Drinking
- Drinkability
- Not drinkable
