Murata Onsen
Analysis UnverifiedMurata Onsen is a pumped, drilled source in Kawakami, part of Yufuin, a spa town famed for its abundant springs. It emerges at a hot 63.9°C, and the clear, faintly yellow-brown water carries small dark-brown mineral flakes. Though mild as a simple spring, it is rich in metasilicic acid at 189.0 mg/kg, leaving a soft, clinging feel on the skin—ideal for unhurried soaks in the quiet hills.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
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.
With the source at 63.9°C, check the bath temperature before getting in and add water if it is too hot; the gentle pH 8.4 water then rewards a long, leisurely soak.
With 189.0 mg/kg of metasilicic acid and weakly alkaline pH 8.4, this water is traditionally associated with silky skin, and its soft, clinging feel may support deep relaxation after a day of travel.
The source is hot, so avoid long soaks in very hot water and watch for lightheadedness. People in acute illness or with serious heart conditions should refrain or consult a doctor.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Murata Onsen
- Spring type
- Simple Hot Spring
- Old spring type name
- 単純温泉
- Source temperature
- 63.9℃
- pH
- 8.4
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2019-11-20
- Analyst organization
- 公益社団法人大分県薬剤師会 検査センター
- Registration No.
- 大分県第3号
Cations
- Lithium ion Li⁺
- 0.20 mg/kg
- Sodium ion Na⁺
- 62.3 mg/kg
- Potassium ion K⁺
- 9.0 mg/kg
- Magnesium ion Mg²⁺
- 13.0 mg/kg
- Calcium ion Ca²⁺
- 30.1 mg/kg
- Manganese ion Mn²⁺
- 0.30 mg/kg
- Iron(II) ion Fe²⁺
- 0.80 mg/kg
- Lead ion Pb²⁺
- < 0.01 mg/kg
- Strontium ion Sr²⁺
- 0.20 mg/kg
- Copper ion Cu²⁺
- < 0.05 mg/kg
- Cadmium ion Cd²⁺
- < 0.001 mg/kg
- Total cations
- 0.12 mg/kg
Anions
- Fluoride ion F⁻
- 0.40 mg/kg
- Chloride ion Cl⁻
- 35.1 mg/kg
- Sulfate ion SO₄²⁻
- 121 mg/kg
- Bicarbonate ion HCO₃⁻
- 75.8 mg/kg
- Carbonate ion CO₃²⁻
- 23.4 mg/kg
- Total anions
- 0.26 mg/kg
Undissociated Components
- Sulfuric acid H₂SO₄
- 0.00 mg/kg
- Phosphoric acid H₃PO₄
- 0.00 mg/kg
- Arsenious acid HAsO₂
- 0.00 mg/kg
- Metasilicic acid H₂SiO₃
- 189 mg/kg
- Metaboric acid HBO₂
- 1.2 mg/kg
- Total undissociated
- 0.19 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
Totals
- Total dissolved substances
- 0.56 mg/kg
- Component total
- 0.56 mg/kg
- Evaporation residue
- 0.46 mg/kg
Usage
- Heating
- Yes（温泉手帖（2023.12宿泊）『加水と加温ありと記載があった』、末尾まとめ『加水加温あり』（客室風呂・施設全体）。）
- Dilution
- Yes（温泉手帖（2023.12宿泊）『加水と加温ありと記載があった』、末尾まとめ『加水加温あり』。各客室の湯船に湯温調節用の加水カランあり。）
- 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
