Tange Onsen

Analysis Unverified
たんげ温泉
Lukewarm Mountain Stream Spring

Tange Onsen is a young spring that rose in the early Heisei era in the mountains between Shima and Sawatari, along the rushing Tange River. Piped a few hundred meters from its well, the water is a gentle alkaline spring rich in calcium and sulfate. Naturally lukewarm, it carries fine white mineral flakes, and suits long, quiet soaks to the roar of the nearby stream.

AI Generated
硫塩
SPRING TYPE
Sulfate Spring

Moisturizes the skin and forms a protective barrier, producing a deeply moisturizing effect. Can also soothe inflammations and help the skin heal.

See features & indications▾
Bathing indications
Cuts and grazesPeripheral circulatory failurePoor circulationDepressionXeroderma
Drinking indications
Biliary tract diseaseDyslipidemia (high cholesterol)Constipation

※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.

Definition :Primary anion: sulfate ion.
Source: 環境省「あんしん・あんぜんな温泉利用のいろは」(監修:日本温泉気候物理医学会) ↗Read full article
PH VALUE
8.8
Alkaline
Acidic ← 07 Neutral14 → Alkaline
Alkaline (pH > 8.5). Strong soap-like cleansing and keratin-softening effects. The characteristic slippery feel begins to appear.
TEMPERATURE
34.5℃
Warm Spring
Mildly warm. Gentle on the skin and ideal for long soaks.
KEY MINERALS

The bar length shows how abundant each component is compared to thresholds that make it "distinctive" (therapeutic spring standards, beauty spring criteria, etc.).

Sulfate ionSee detail
704 mg/kg

Soothes the skin and gently improves circulation.

Calcium ionSee detail
277 mg/kg

Gentle astringent action that conditions the skin.

Metasilicic acidSee detail
23.5 mg/kg

A natural moisturizer that leaves a hydrated feel on the skin.

Fluoride ionSee detail
0.3 mg/kg

A trace antibacterial component that keeps skin clean.

Metaboric acidSee detail
0.7 mg/kg

A trace component with gentle antibacterial and anti-inflammatory action.

CHARACTER · COMPOSITION PROFILE
1234StimulationBactericidalSkin BeautyHeat RetentionRelaxation

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.

USAGE
HeatedYes
DilutedNo
RecycledNo
FilteredNo
DisinfectedNo
AdditivesNo
▸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.

SENSORY TEST
Color
無色澄明
Smell
無臭
Taste
無味
EFFECTS
Spring-specific indications (bathing)
Cuts and grazesPeripheral circulatory failurePoor circulationDepressionXeroderma
General indications (bathing)
High blood pressure (mild)Rheumatoid arthritisAutonomic instabilityInsomniaChronic pain or stiffness in muscles and jointsMuscle stiffness due to motor paralysisGastrointestinal dysfunction
Contraindications
Acute illness (especially with fever)Active tuberculosisMalignant tumorsSevere heart diseaseRespiratory failureRenal failureBleeding disordersSevere anemiaAny actively progressing illnessPregnancy (especially early and late stages)
BATHING TIPS
AI Generated

The source is a lukewarm 34.5°C, so tubs mixing heated water and raw spring vary in temperature from spot to spot. Near body heat, it rewards slow 20-30 minute soaks, alternating with the warmer area by the inlet.

EFFECT STORY
AI Generated

With 704.4 mg/kg of sulfate and 276.9 mg/kg of calcium, this calcium-sulfate spring belongs to a type traditionally associated with soothing aches and may help relieve pain, while a long lukewarm soak leaves a restorative warmth that lingers after bathing.

CAUTIONS
AI Generated

Even lukewarm soaks take energy over time, so drink water and rest if you feel lightheaded. 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
Tange Onsen
Spring type
Calcium Sulfate Hot Spring
Source temperature
34.5℃
pH
8.8
Flow rate
137.5 L/min
Flow type
動力揚湯
Osmotic pressure
低張性

Analysis Document

Analysis date
2014-07-09
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⁺
41.8 mg/kg
Potassium ion K⁺
0.90 mg/kg
Ammonium ion NH₄⁺
< 0.1 mg/kg
Magnesium ion Mg²⁺
0.40 mg/kg
Calcium ion Ca²⁺
277 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⁺
0.30 mg/kg
Barium ion Ba²⁺
< 0.1 mg/kg
Copper ion Cu²⁺
< 0.01 mg/kg
Total cations
0.32 mg/kg

Anions

Fluoride ion F⁻
0.30 mg/kg
Chloride ion Cl⁻
43.4 mg/kg
Hydrogen sulfide ion HS⁻
0.30 mg/kg
Thiosulfate ion S₂O₃²⁻
< 0.1 mg/kg
Sulfate ion SO₄²⁻
704 mg/kg
Bicarbonate ion HCO₃⁻
12.5 mg/kg
Carbonate ion CO₃²⁻
2.3 mg/kg
Bromide ion Br⁻
< 0.1 mg/kg
Iodide ion I⁻
< 0.1 mg/kg
Sulfide ion S²⁻
< 0.1 mg/kg
Total anions
0.76 mg/kg

Undissociated Components

Arsenious acid HAsO₂
< 0.1 mg/kg
Metasilicic acid H₂SiO₃
23.5 mg/kg
Metaboric acid HBO₂
0.70 mg/kg
Total undissociated
0.02 mg/kg

Dissolved Gas

Free carbon dioxide CO₂
0.10 mg/kg
Free hydrogen sulfide H₂S
< 0.1 mg/kg
Total dissolved gas
0.00 mg/kg

Totals

Total dissolved substances
1.1 mg/kg
Component total
1.1 mg/kg
Evaporation residue
1.1 mg/kg

Usage

Heating
Yes
Dilution
No
Recycle / Filter
No
Additives
No
Disinfection
No

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
FACILITY INFO
AI draft (unverified)
Official site
Tattoo
Confirming
Private bath (Kashikiri)
Available
Room with private open-air bath
Available
About tattoos and onsen
Travelers with tattoos can still bathe comfortably in a private bath (Kashikiri) or a room with a private open-air bath.
Transit
Approx. 25 min by car from JR Agatsuma Line (JR吾妻線) Nakanojo Station (中之条駅). From Nakanojo Station, take the bus bound for Sawatari Onsen (沢渡温泉) and get off at "Tange-guchi" (たんげ口) (approx. 25 min). Shuttle service available (reservation required). Bus departure times from Nakanojo Station are 14:25 or 16:10.
Parking
Available. 30 spaces. Free. No reservation required.
Facilities
Public BathOpen-air BathPrivate Bath (Reservable)Post-bath LoungeNon-smoking RoomSouvenir ShopBanquet HallSmoking Area
House rules
All rooms are non-smoking; a designated smoking area is provided. Please refrain from dragging suitcases or consuming food/drinks in the lobby. There is no elevator. Mobile phone reception may be poor depending on the model (SoftBank has no service). Insects may appear in large numbers depending on the season. Please be careful of insects (such as gnats) when using the open-air bath or around your car. The hot springs switch between male and female use at 7:00 PM. The open-air bath closes at 10:00 PM for safety reasons and reopens at 6:00 AM the next morning. The indoor bath is available 24 hours. The waterfall and exterior lighting will be turned off after 10:00 PM.
This information may change without notice. Please contact the facility directly for accurate details.
How Long to Stay (Toji)
Start with 2 nights / 3 days

Japan’s Ministry of the Environment notes that even a short stay refreshes you. For a full therapeutic cure, around 2–3 weeks is the guideline.

More on toji length
✨ The descriptions, catch phrases, and translations on this page are generated by AI (Claude). pH, temperature, and component values are OCR-extracted from the official analysis report. Learn more