Yamashiro Onsen (No. 7 Gensen and No. 8 Gensen)
Analysis UnverifiedYamashiro Onsen, said to have been opened by the monk Gyoki some 1,300 years ago, draws this water from two wells: the No. 7 source gushing in Katsuradani-machi and the No. 8 source in Yamato-machi, blended at a relay tank in the town. The Yamashiro No. 7 and No. 8 blend is clear, gently alkaline and rich in sulfate, calcium and sodium, a soak whose warmth lingers long after bathing, well suited to travellers unwinding after a day among Kutani pottery studios.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
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.
The source emerges at 46.4°C, but the bath is kept around 41°C. Sulfate water warms deeply, so soak five to ten minutes, rest and drink water, then return for a second dip.
With 756.5 mg/kg of sulfate and 182.5 mg/kg of calcium, this sulfate spring is traditionally associated with helping to relieve pain in stiff shoulders and lower backs, while its restorative warmth may support a cosy evening after a long journey.
People with acute illness, serious heart disease or respiratory failure should avoid bathing. Older or weakened bathers should keep soaks short and drink water before and after.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Yamashiro Onsen (No. 7 Gensen and No. 8 Gensen)
- Spring type
- Calcium-Sodium Sulfate Hot Spring
- Source temperature
- 46.4℃
- pH
- 8.3
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2016-02-15
- Analyst organization
- 株式会社エオネックス
- Registration No.
- 石川県第3号
Cations
- Lithium ion Li⁺
- < 0.1 mg/kg
- Sodium ion Na⁺
- 193 mg/kg
- Potassium ion K⁺
- 1.9 mg/kg
- Ammonium ion NH₄⁺
- 0.10 mg/kg
- Magnesium ion Mg²⁺
- < 0.1 mg/kg
- Calcium ion Ca²⁺
- 183 mg/kg
- Aluminum ion Al³⁺
- < 0.1 mg/kg
- Manganese ion Mn²⁺
- < 0.1 mg/kg
- Iron(II) ion Fe²⁺
- < 0.1 mg/kg
- Iron(III) ion Fe³⁺
- < 0.1 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Strontium ion Sr²⁺
- 0.80 mg/kg
- Barium ion Ba²⁺
- < 0.1 mg/kg
- Copper ion Cu²⁺
- < 0.01 mg/kg
- Total cations
- 0.38 mg/kg
Anions
- Fluoride ion F⁻
- 2.2 mg/kg
- Chloride ion Cl⁻
- 59.8 mg/kg
- Hydrogen sulfide ion HS⁻
- < 0.1 mg/kg
- Thiosulfate ion S₂O₃²⁻
- < 0.1 mg/kg
- Sulfate ion SO₄²⁻
- 757 mg/kg
- Bicarbonate ion HCO₃⁻
- 12.9 mg/kg
- Carbonate ion CO₃²⁻
- 4.8 mg/kg
- Bromide ion Br⁻
- 0.10 mg/kg
- Iodide ion I⁻
- < 0.1 mg/kg
- Sulfide ion S²⁻
- < 0.1 mg/kg
- Total anions
- 0.84 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- < 0.1 mg/kg
- Metasilicic acid H₂SiO₃
- 39.7 mg/kg
- Metaboric acid HBO₂
- 2.5 mg/kg
- Total undissociated
- 0.04 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 2.7 mg/kg
- Free hydrogen sulfide H₂S
- < 0.1 mg/kg
- Total dissolved gas
- 0.00 mg/kg
Totals
- Total dissolved substances
- 1.3 mg/kg
- Component total
- 1.3 mg/kg
Usage
- Heating
- Yes（公式サイト成分分析表PDF（seibun.pdf 1頁 山代温泉7号・8号源泉の掲示、分析終了日平成28年2月15日）「成分に影響を与える項目及び内容」に『加温利用 あり（適温を維持するため）』。使用位置における温度41℃。）
- Dilution
- Yes（同掲示『加水利用 あり（温泉の供給量の不足を補うため）』。じゃらん yad324362 温泉欄『山代温泉(加水・加温・循環ろ過)』（2026-10-18確認）も一致。）
- Recycle / Filter
- Recycled / Filtered / 同掲示『循環利用 あり（温泉資源の確保と衛生管理のため）』。じゃらん『循環ろ過』。
- Additives
- No
- Disinfection
- Yes（塩素消毒）
Indications & Contraindications
- Bathing indications
- 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)
Drinking
- Drinkability
- Not drinkable