Abe Gensen

Analysis Unverified
安部源泉
Azuma Mountain White Bloom Spring

This spring rises deep in the Azuma mountains at about 1,100 m, reached by a mountain road climbing beyond Shirabu Onsen from Yonezawa. Counted among Yonezawa's eight hot springs, it sits in a valley near the headwaters of the Mogami River, where bathers gaze at waterfalls and ridgelines from open-air pools. Rich in calcium, the water leaves white mineral flakes on the tub floor and feels soft and smooth, ideal for those who want to savor mountain scenery in secluded quiet.

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
7.1
Neutral
Acidic ← 07 Neutral14 → Alkaline
Upper bound of neutral (pH 7.5). Approaching mildly alkaline, the boundary where skin starts to feel smooth.
TEMPERATURE
50.7℃
Hot Spring
Quite hot. Often diluted with water for a comfortable bathing temperature.
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.).

Fluoride ionSee detail
1.6 mg/kg

A trace antibacterial component that keeps skin clean.

Sulfate ionSee detail
755 mg/kg

Soothes the skin and gently improves circulation.

Metasilicic acidSee detail
31.0 mg/kg

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

Calcium ionSee detail
280 mg/kg

Gentle astringent action that conditions the skin.

Aluminum ionSee detail
0.3 mg/kg

Tightens the skin and balances sebum.

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
Free-Flowing Onsen
Pure spring water — no dilution, no recirculation
HeatedNo
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
わずかに硫黄臭
Taste
異味なし
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

At 50.7°C the source is hot and indoor baths can feel warm, so pour water over yourself first. White mineral deposits make floors slippery, and mountain nights are cold, so dry off and dress warmly soon after bathing.

EFFECT STORY
AI Generated

With 755.4 mg/kg of sulfate and 280.2 mg/kg of calcium, this calcium-sulfate spring has long been valued for easing stiff muscles and joints and may help relieve pain. A slow soak in the 50.7°C water warms you to the core, offering restorative warmth that lingers even in the cool mountain air.

CAUTIONS
AI Generated

Avoid bathing during acute illness or with serious heart or kidney conditions. Mind the hot water, and watch your step on floors made slippery by mineral deposits.

※ See the analysis data below for detailed contraindications

ANALYSIS DATAView all analysis fields ▼

Source Info

Source name
Abe Gensen
Spring type
Calcium Sulfate Spring
Source temperature
50.7℃
pH
7.1
Osmotic pressure
低張性

Analysis Document

Analysis date
2015-10-22
Analyst organization
ネクスト環境コンサルタント株式会社
Registration No.
温泉分析山形第5号

Cations

Sodium ion Na⁺
52.8 mg/kg
Potassium ion K⁺
5.8 mg/kg
Magnesium ion Mg²⁺
2.1 mg/kg
Calcium ion Ca²⁺
280 mg/kg
Aluminum ion Al³⁺
0.30 mg/kg
Manganese ion Mn²⁺
0.70 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
Cadmium ion Cd²⁺
< 0.01 mg/kg
Total cations
0.34 mg/kg

Anions

Fluoride ion F⁻
1.6 mg/kg
Chloride ion Cl⁻
10.8 mg/kg
Hydrogen sulfide ion HS⁻
< 0.1 mg/kg
Thiosulfate ion S₂O₃²⁻
0.10 mg/kg
Sulfate ion SO₄²⁻
755 mg/kg
Bicarbonate ion HCO₃⁻
72.2 mg/kg
Bromide ion Br⁻
< 0.1 mg/kg
Total anions
0.84 mg/kg

Undissociated Components

Metasilicic acid H₂SiO₃
31.0 mg/kg
Metaboric acid HBO₂
0.10 mg/kg
Total undissociated
0.03 mg/kg

Dissolved Gas

Free carbon dioxide CO₂
23.7 mg/kg
Free hydrogen sulfide H₂S
< 0.1 mg/kg
Total dissolved gas
0.02 mg/kg

Totals

Total dissolved substances
1.2 mg/kg
Component total
1.2 mg/kg
Evaporation residue
1.3 mg/kg

Usage

Heating
No
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)
Tattoo
ConfirmingSwimwear or towels are permitted in the mixed-gender open-air bath. Swimwear is also available for purchase or rent.
Private bath (Kashikiri)
Available
Bathing wear (Yuami-gi)
Free rental
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.
Hours
Overnight guests can use both the open-air and indoor baths all night. Cleaning is carried out sequentially between 9 AM and 1 PM.
Closed days: Open all year round.
Transit
From JR Yonezawa Station (JR米沢駅), take the Yamagata Kotsu Bus (山形交通バス) for about 40 minutes, get off at Tengendai Yumoto Station (天元台湯元駅), then it's about a 4-minute ride by the inn's shuttle. During winter (mid-November onwards), due to snow, please park at Tengendai Kogen Parking (天元台高原駐車場) and use the inn's shuttle.
Parking
Available (25 spaces: 10 in front of the inn, 15 on premises). No reservation required, free of charge. During winter, please use Tengendai Parking (天元台駐車場) (free), and the inn will provide a shuttle.
Facilities
Open-air bathPublic bathPrivate open-air bathFamily bathShopVending machinesWi-Fi (partial)Ski drying room
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