Makukawa No.5 Source
Analysis UnverifiedMakukawa No.5 Source gushes naturally within the national forest of the Azuma range, beside the Makukawa mountain stream at around 1,300 meters. Clear when it emerges, the sulfur water clouds to a milky white as it meets the air, with flakes of yunohana drifting through it. Steeping amid its strong sulfur aroma and the sound of the stream offers a wild, remote-spring experience for lovers of characterful mountain baths.
The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).
The source of the distinctive sulfur smell. Dilates blood vessels via skin and inhalation to strongly boost circulation.
Absorbed through the skin to gently promote peripheral circulation.
- Sulfur15.6 mg/kg
- Feel
- Smells like boiled eggs; the water may turn milky white or blue-green.
- Said to
- Said to be strongly antibacterial and to promote circulation. Bathing indications include atopic dermatitis and chronic eczema.
- Note
- With sensitive skin, rinse with fresh water after bathing. Remove silver jewelry—it tarnishes.
- Metasilicic acid83.7 mg/kg
- Feel
- Your skin may feel smoother.
- Said to
- 50 mg/kg or more is said to mark a “skin-beautifying spring”; it is also used in skincare.
- Note
- The “skin-beautifying” label is a common rule of thumb, not a legal standard.
- Source temperature53.2℃
- Feel
- The source is 42°C or hotter; the bath may be on the hot side.
- Said to
- Heat is said to boost circulation and warm the body.
- Note
- Older people and those with high blood pressure or heart conditions should avoid baths of 42°C or more. Keep soaks short.
Effects are general descriptions based on the Ministry of the Environment’s indications by spring type, not a guarantee.
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.
Because the water contains hydrogen sulfide, keep soaks to about ten minutes with breaks, even outdoors. Remove silver and metal accessories, which may tarnish, and check the temperature, as the source emerges at 53.2°C.
Holding 11.9 mg/kg of free hydrogen sulfide and 3.3 mg/kg of hydrosulfide ion, this sulfur water is traditionally associated with immune system stimulation in toji culture. Its neutral pH 6.5 and 83.7 mg/kg of metasilicic acid may also leave silky skin after bathing.
As the water contains hydrogen sulfide, mind ventilation and leave the bath at once if you feel unwell. Those with sensitive skin may rinse with fresh water afterward.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Makukawa No.5 Source
- Spring type
- Simple Sulfur Hot Spring (hydrogen sulfide type)
- Source temperature
- 53.2℃
- pH
- 6.5
- Flow rate
- 19.6 L/min
- Flow type
- 自然湧出
- Osmotic pressure
- 低張性
Analysis Document
- Analysis date
- 2020-09-23
- Analyst organization
- 株式会社新環境分析センター
- Registration No.
- 福島第3号
Cations
- Hydrogen ion H⁺
- < 0.1 mg/kg
- Lithium ion Li⁺
- < 0.1 mg/kg
- Sodium ion Na⁺
- 6.7 mg/kg
- Potassium ion K⁺
- 4.9 mg/kg
- Ammonium ion NH₄⁺
- 0.50 mg/kg
- Magnesium ion Mg²⁺
- 4.5 mg/kg
- Calcium ion Ca²⁺
- 14.5 mg/kg
- Aluminum ion Al³⁺
- < 0.1 mg/kg
- Manganese ion Mn²⁺
- 0.80 mg/kg
- Iron(II) ion Fe²⁺
- < 0.1 mg/kg
- Zinc ion Zn²⁺
- < 0.1 mg/kg
- Lead ion Pb²⁺
- not detected
- Strontium ion Sr²⁺
- 0.10 mg/kg
- Barium ion Ba²⁺
- 0.20 mg/kg
- Copper ion Cu²⁺
- < 0.1 mg/kg
- Cadmium ion Cd²⁺
- not detected
- Total cations
- 32.2 mg/kg
Anions
- Fluoride ion F⁻
- 0.60 mg/kg
- Chloride ion Cl⁻
- 0.70 mg/kg
- Hydroxide ion OH⁻
- < 0.1 mg/kg
- Hydrogen sulfide ion HS⁻
- 3.3 mg/kg
- Thiosulfate ion S₂O₃²⁻
- 2.1 mg/kg
- Sulfate ion SO₄²⁻
- 7.2 mg/kg
- Bicarbonate ion HCO₃⁻
- 81.0 mg/kg
- Carbonate ion CO₃²⁻
- < 0.1 mg/kg
- Bromide ion Br⁻
- < 0.1 mg/kg
- Iodide ion I⁻
- < 0.1 mg/kg
- Hydrogen sulfate HSO₄⁻
- < 0.1 mg/kg
- Nitrite ion NO₂⁻
- < 0.1 mg/kg
- Nitrate ion NO₃⁻
- < 0.1 mg/kg
- Dihydrogen phosphate H₂PO₄⁻
- < 0.1 mg/kg
- Total anions
- 94.9 mg/kg
Undissociated Components
- Arsenious acid HAsO₂
- < 0.1 mg/kg
- Metasilicic acid H₂SiO₃
- 83.7 mg/kg
- Metaboric acid HBO₂
- 0.40 mg/kg
- Total undissociated
- 84.1 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 52.9 mg/kg
- Free hydrogen sulfide H₂S
- 11.9 mg/kg
- Total dissolved gas
- 64.8 mg/kg
Totals
- Total dissolved substances
- 211 mg/kg
- Component total
- 276 mg/kg
- Evaporation residue
- 211 mg/kg
Usage
- Usage status
- Unknown
Indications & Contraindications
- Bathing indications
- Atopic dermatitis, Plaque psoriasis, Chronic eczema, Epidermal suppuration, 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), Severe chronic dermatitis (sulphur springs)
Drinking
- Drinkability
- Not drinkable
