Akan Lakeside Onsen Hanayuka Source
Analysis UnverifiedAkanko Onsen spreads along the south shore of Lake Akan, home of the marimo moss balls, and is one of eastern Hokkaido's leading spa towns. This water is pumped from a well in the lakeside district that once also fed a public bathhouse for local residents. It is a mild simple spring, yet bicarbonate and metasilicic acid give it a smooth touch, and its clear water with a faint iron note gently loosens a body chilled by walks around the lake and forest.
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.
Absorbed through the skin to gently promote peripheral circulation.
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 is 60.0°C and tub temperatures can differ, so test with a pour first and keep soaks in the hotter tub short. The neutral, low-irritation water suits a longer soak in the cooler tub.
Bicarbonate at 323.8 mg/kg is said to soften the skin's surface for a silky finish, and 237.1 mg/kg of metasilicic acid adds smoothness, making this neutral water a gentle place for deep relaxation.
The source is hot, so avoid long soaks if the bath feels too warm. Those in acute illness or with serious heart or respiratory conditions should refrain or consult a doctor; avoid bathing after drinking or eating.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Akan Lakeside Onsen Hanayuka Source
- Spring type
- Simple Hot Spring
- Source temperature
- 60℃
- pH
- 6.8
- Flow type
- 動力揚湯
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2014-12-03
- Analyst organization
- 日本衛生株式会社
- Registration No.
- 北海道第11号
Cations
- Sodium ion Na⁺
- 98.2 mg/kg
- Potassium ion K⁺
- 9.6 mg/kg
- Ammonium ion NH₄⁺
- 0.30 mg/kg
- Magnesium ion Mg²⁺
- 16.9 mg/kg
- Calcium ion Ca²⁺
- 35.4 mg/kg
- Aluminum ion Al³⁺
- 0.01 mg/kg
- Manganese ion Mn²⁺
- 0.20 mg/kg
- Iron(II) ion Fe²⁺
- 0.30 mg/kg
- Zinc ion Zn²⁺
- not detected
- Lead ion Pb²⁺
- not detected
- Copper ion Cu²⁺
- not detected
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 0.16 mg/kg
Anions
- Fluoride ion F⁻
- 0.40 mg/kg
- Chloride ion Cl⁻
- 43.3 mg/kg
- Hydrogen sulfide ion HS⁻
- 0.00 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 0.00 mg/kg
- Sulfate ion SO₄²⁻
- 47.7 mg/kg
- Bicarbonate ion HCO₃⁻
- 324 mg/kg
- Carbonate ion CO₃²⁻
- 0.20 mg/kg
- Hydrogen phosphate HPO₄²⁻
- 0.10 mg/kg
- Total anions
- 0.42 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 237 mg/kg
- Metaboric acid HBO₂
- 10.8 mg/kg
- Total undissociated
- 0.25 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 85.6 mg/kg
- Free hydrogen sulfide H₂S
- 0.00 mg/kg
- Total dissolved gas
- 0.09 mg/kg
Totals
- Total dissolved substances
- 0.82 mg/kg
- Component total
- 0.91 mg/kg
- Evaporation residue
- 0.59 mg/kg
Usage
- Usage status
- Unknown
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
