Ogawa Spring
Analysis UnverifiedNestled quietly in the mountainous region of Toyama Prefecture, Ogawa Onsen gushes forth. This naturally gushing spring, cherished by locals for generations, delivers the pure blessings of the earth. Its mild, neutral waters gently embrace the body, while a subtle veil of salt ensures a restorative warmth that lingers. Guests will also experience the benefit of silky skin, feeling remarkably light and refreshed after their soak. It is highly recommended for those seeking deep relaxation from daily fatigue, and those desiring gentle comfort for cold sensitivity or gastrointestinal discomfort.
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.
- Chloride (salt)387 mg/kg
- Feel
- Tastes salty; the warmth lasts after you get out.
- Said to
- Salt is said to form a film on the skin that keeps in heat and moisture. Bathing indications include cuts, poor circulation and dry skin.
- Note
- May sting cuts. Strong salty water can tire you—avoid long soaks.
- Bicarbonate (baking soda)364 mg/kg
- Feel
- Your skin feels smooth and silky.
- Said to
- Said to remove old skin cells and excess sebum. Bathing indications include cuts, poor circulation and dry skin.
- Note
- It can leave skin dry—moisturize after bathing.
- Metasilicic acid94.2 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 temperature53.5℃
- 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.
As a blend of chloride and bicarbonate mineral waters, Ogawa Onsen feels exceptionally skin-friendly and invites extended soaking—yet note the source temperature reaches a robust 53.5°C. Begin with brief 3–10 minute immersions initially; once acclimated, extend to 15–20 minutes. After bathing, gently pat dry without rinsing away the mineral film, then rest in a warm environment for 30 minutes to lock in the thermal benefit.
With 337 mg/kg sodium and 387 mg/kg chloride content, the spring's minerals coat the skin in a protective film while diffusing warmth deep into the body core, addressing cold sensitivities and peripheral circulation disorders. Bicarbonate ions (363 mg/kg) smooth and refine skin condition, simultaneously supporting fatigue recovery and gastric-intestinal wellness. At a bathing temperature of 42°C, this spring proves especially beneficial for easing chronic joint and muscle stiffness, alleviating everyday stress, and promoting restorative sleep.
Avoid bathing if experiencing fever, active tuberculosis, severe cardiac or renal disease, or gastrointestinal hemorrhage. The facility employs continuous sodium hypochlorite sanitization; guests with sensitive skin are advised to rinse with warm water post-bathing.
※ See the analysis data below for detailed contraindications
ANALYSIS DATAView all analysis fields ▼
Source Info
- Source name
- Ogawa Spring
- Spring type
- Sodium chloride and bicarbonate spring
- Source temperature
- 53.5℃
- Flow type
- Natural spring
- Osmotic pressure
- Hypotonic
Analysis Document
- Analysis date
- 2020-06-09
- Analyst organization
- 富山県衛生研究所
- Registration No.
- 富山-01
Cations
- Lithium ion Li⁺
- 1.2 mg/kg
- Sodium ion Na⁺
- 337 mg/kg
- Potassium ion K⁺
- 13.2 mg/kg
- Magnesium ion Mg²⁺
- 3.4 mg/kg
- Calcium ion Ca²⁺
- 48.8 mg/kg
- Manganese ion Mn²⁺
- 0.20 mg/kg
- Strontium ion Sr²⁺
- 1.7 mg/kg
- Barium ion Ba²⁺
- 0.20 mg/kg
- Total cations
- 406 mg/kg
Anions
- Fluoride ion F⁻
- 1.6 mg/kg
- Chloride ion Cl⁻
- 387 mg/kg
- Sulfate ion SO₄²⁻
- 31.8 mg/kg
- Bicarbonate ion HCO₃⁻
- 364 mg/kg
- Bromide ion Br⁻
- 1.4 mg/kg
- Total anions
- 786 mg/kg
Undissociated Components
- Metasilicic acid H₂SiO₃
- 94.2 mg/kg
- Metaboric acid HBO₂
- 21.4 mg/kg
- Total undissociated
- 116 mg/kg
Dissolved Gas
- Free carbon dioxide CO₂
- 56.3 mg/kg
- Total dissolved gas
- 56.3 mg/kg
Totals
- Total dissolved substances
- 1307 mg/kg
- Component total
- 1363 mg/kg
Usage
- Heating
- No
- Dilution
- Yes（Water is regularly added using an automatic temperature control system due to high source temperature）
- Recycle / Filter
- No
- Additives
- No
- Disinfection
- Yes（Sodium hypochlorite is continuously used）
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
