Water profile — Taikou no Yu

（金泉）有明1号泉と有明2号泉の混合泉Kinsen — Ariake No.1 and No.2 Blended Spring

鉄Iron-bearing

A gold-water (kinsen) blend of the Ariake No.1 and No.2 wells: an iron-bearing sodium chloride strong-salt spring that runs clear at the wellhead and turns brown once it meets the air. It emerges at 81.0 °C, among Japan's hottest natural sources, neutral in pH and heavy with salt and a metallic edge on the tongue. The evaporation residue alone is 26,350 mg/kg, so bathers step out with a mineral film on the skin. The posted table lists the water for cuts, peripheral circulation disorders, cold sensitivity, depressed mood and dry skin.

Good for

Aches & joints

Warmth eases stiffness and raises the pain threshold. Radon and sulfate springs show the strongest evidence for joint and muscle pain.

stiff shoulders

On the certificate:Muscle stiffness associated with motor paralysis

Warming

Salt forms a film on the skin that slows heat loss, so the warmth lingers long after the bath (the classic heat-keeping water, nettō 熱の湯).

cold sensitivity

On the certificate:Cold sensitivity

Cuts

Mineral-rich chloride, sulfate and sulfur waters have a long-recorded soothing effect on minor cuts and slow-healing skin.

minor wounds

On the certificate:Cuts

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:Autonomic nervous system instabilityConvalescenceFatigue recoveryGeneral health improvementDepressed mood

Take care

Contraindications

Active stage of any illness (especially with fever)
Active tuberculosis
Advanced malignant tumor, severe anemia, or other marked physical debilitation
Severe heart or lung disease causing breathlessness on slight exertion
Severe liver disease with edema
Gastrointestinal bleeding
Any visible bleeding
Acute exacerbation of a chronic illness

Measured at the source

pH

6.66

Neutral

Source temperature

81.0°C

Hot

Tonicity

Hypertonic

Flow rate

46L/min

Low

Radon

7.40Bq/kg

Low

On the certificate

Chronic muscle or joint pain and stiffness (rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains — chronic phase)
Reduced gastrointestinal function (heaviness, bloating)
Mild hypertension
Impaired glucose tolerance (diabetes)
Mild hypercholesterolemia
Mild asthma or emphysema
Hemorrhoid pain
Stress-related symptoms (sleep disorders, depressed mood)
Peripheral circulation disorders
Dry skin

Evidence

（金泉）極楽泉源Kinsen — Gokuraku Gensen

塩Chloride

The Gokuraku wellhead, one of Arima's gold-water sources: a sodium chloride spring that surfaces at 98.1 °C, effectively boiling and among the hottest natural sources in Japan. Neutral in pH and hypertonic, it leaves 14,150 mg/kg of evaporation residue and visibly releases gas at the wellhead; it runs colorless and clear on emerging, then clouds to a brown suspension as it stands, the signature of Arima's gold water. The posted table lists it for cuts, peripheral circulation disorders, cold sensitivity, depressed mood and dry skin.

Good for

Warming

Salt forms a film on the skin that slows heat loss, so the warmth lingers long after the bath (the classic heat-keeping water, nettō 熱の湯).

cold sensitivity

On the certificate:Cold sensitivity

Aches & joints

Warmth eases stiffness and raises the pain threshold. Radon and sulfate springs show the strongest evidence for joint and muscle pain.

stiff shoulders

On the certificate:Muscle stiffness associated with motor paralysis

Cuts

Mineral-rich chloride, sulfate and sulfur waters have a long-recorded soothing effect on minor cuts and slow-healing skin.

minor wounds

On the certificate:Cuts

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:Autonomic nervous system instabilityConvalescenceFatigue recoveryGeneral health improvementDepressed mood

Take care

Contraindications

Active stage of any illness (especially with fever)
Active tuberculosis
Advanced malignant tumor, severe anemia, or other marked physical debilitation
Severe heart or lung disease causing breathlessness on slight exertion
Severe liver disease with edema
Gastrointestinal bleeding
Any visible bleeding
Acute exacerbation of a chronic illness

Measured at the source

pH

7.10

Neutral

Source temperature

98.1°C

Hot

Tonicity

Hypertonic

Flow rate

66L/min

Typical

Radon

1.90Bq/kg

Low

On the certificate

Chronic muscle or joint pain and stiffness (rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains — chronic phase)
Reduced gastrointestinal function (heaviness, bloating)
Mild hypertension
Impaired glucose tolerance (diabetes)
Mild hypercholesterolemia
Mild asthma or emphysema
Hemorrhoid pain
Stress-related symptoms (sleep disorders, depressed mood)
Peripheral circulation disorders
Dry skin

Evidence

（金泉）熱泉1号Kinsen — Nessen No.1

塩Chloride

Nessen No.1 rises at 54.0 °C as a colorless, clear sodium chloride spring. Hypotonic and neutral, with 2,966 mg/kg of evaporation residue, it tastes faintly salty and carries a faint rotten-egg note of hydrogen sulfide at the wellhead — a gentler counterpoint to the dense brown gold water of the other Arima wells listed on the same panel. The posted table lists it for cuts, peripheral circulation disorders, cold sensitivity, depressed mood and dry skin.

Good for

Warming

Salt forms a film on the skin that slows heat loss, so the warmth lingers long after the bath (the classic heat-keeping water, nettō 熱の湯).

cold sensitivity

On the certificate:Cold sensitivity

Aches & joints

Warmth eases stiffness and raises the pain threshold. Radon and sulfate springs show the strongest evidence for joint and muscle pain.

stiff shoulders

On the certificate:Muscle stiffness associated with motor paralysis

Cuts

Mineral-rich chloride, sulfate and sulfur waters have a long-recorded soothing effect on minor cuts and slow-healing skin.

minor wounds

On the certificate:Cuts

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:Autonomic nervous system instabilityConvalescenceFatigue recoveryGeneral health improvementDepressed mood

Take care

Contraindications

Active stage of any illness (especially with fever)
Active tuberculosis
Advanced malignant tumor, severe anemia, or other marked physical debilitation
Severe heart or lung disease causing breathlessness on slight exertion
Severe liver disease with edema
Gastrointestinal bleeding
Any visible bleeding
Acute exacerbation of a chronic illness

Measured at the source

pH

6.00

Neutral

Source temperature

54.0°C

Hot

Tonicity

Hypotonic

Flow rate

3.7L/min

Low

Radon

7.90Bq/kg

Low

On the certificate

Chronic muscle or joint pain and stiffness (rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains — chronic phase)
Reduced gastrointestinal function (heaviness, bloating)
Mild hypertension
Impaired glucose tolerance (diabetes)
Mild hypercholesterolemia
Mild asthma or emphysema
Hemorrhoid pain
Stress-related symptoms (sleep disorders, depressed mood)
Peripheral circulation disorders
Dry skin

Evidence

温泉病院金泉2号Onsen Hospital Kinsen No.2

鉄Iron-bearing

Onsen Hospital Kinsen No.2 is a cold-mineral source (17.1 °C) heated for bathing: an iron-bearing sodium chloride strong-salt water that arrives strongly yellow-brown and turbid, tasting heavily salty and bitter with a metallic edge. It is mildly alkaline and hypertonic, leaving 15,010 mg/kg of evaporation residue, and carries radon at 88.0 Bq/kg — well inside the range where the hormesis tradition applies. The posted table lists it for cuts, peripheral circulation disorders, cold sensitivity, depressed mood and dry skin.

Good for

Aches & joints

Warmth eases stiffness and raises the pain threshold. Radon and sulfate springs show the strongest evidence for joint and muscle pain.

stiff shoulders

On the certificate:Muscle stiffness associated with motor paralysis

Warming

Salt forms a film on the skin that slows heat loss, so the warmth lingers long after the bath (the classic heat-keeping water, nettō 熱の湯).

cold sensitivity

On the certificate:Cold sensitivity

Smooth skin

Bicarbonate and alkalinity gently lift dead keratin while silica hydrates, leaving skin smooth. This is the basis of the beautifying-water (bijin-no-yu 美人の湯) reputation.

dry, rough skin

On the certificate:Dry skin

Cuts

Mineral-rich chloride, sulfate and sulfur waters have a long-recorded soothing effect on minor cuts and slow-healing skin.

minor wounds

On the certificate:Cuts

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:Autonomic nervous system instabilityConvalescenceFatigue recoveryGeneral health improvementDepressed mood

Take care

Contraindications

Active stage of any illness (especially with fever)
Active tuberculosis
Advanced malignant tumor, severe anemia, or other marked physical debilitation
Severe heart or lung disease causing breathlessness on slight exertion
Severe liver disease with edema
Gastrointestinal bleeding
Any visible bleeding
Acute exacerbation of a chronic illness

Measured at the source

pH

7.59

Weakly alkaline

Source temperature

17.1°C

Cold mineral

Tonicity

Hypertonic

Flow rate

5.5L/min

Low

Radon

88Bq/kg

Typical

On the certificate

Chronic muscle or joint pain and stiffness (rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains — chronic phase)
Reduced gastrointestinal function (heaviness, bloating)
Mild hypertension
Impaired glucose tolerance (diabetes)
Mild hypercholesterolemia
Mild asthma or emphysema
Hemorrhoid pain
Stress-related symptoms (sleep disorders, depressed mood)
Peripheral circulation disorders

Evidence

株式会社□□ワインWine company well (source name partly illegible)

鉄Iron-bearing

An iron-bearing sodium-calcium chloride strong-salt spring, drawn at 28.5 °C — a low-temperature source that is warmed for the baths. It runs yellow-tinged and clear at the wellhead and throws a yellow-brown sediment as it stands; the taste is strongly salty with a pronounced metallic edge. Hypertonic and neutral, it leaves 25,400 mg/kg of evaporation residue, thick enough to coat the skin. The posted table lists it for cuts, peripheral circulation disorders, cold sensitivity, depressed mood and dry skin.

Good for

Warming

Salt forms a film on the skin that slows heat loss, so the warmth lingers long after the bath (the classic heat-keeping water, nettō 熱の湯).

cold sensitivity

On the certificate:Cold sensitivity

Cuts

Mineral-rich chloride, sulfate and sulfur waters have a long-recorded soothing effect on minor cuts and slow-healing skin.

minor wounds

On the certificate:Cuts

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:Autonomic nervous system instabilityConvalescenceFatigue recoveryGeneral health improvementDepressed mood

Take care

Contraindications

Active stage of any illness (especially with fever)
Active tuberculosis
Advanced malignant tumor, severe anemia, or other marked physical debilitation
Severe heart or lung disease causing breathlessness on slight exertion
Severe liver disease with edema
Gastrointestinal bleeding
Any visible bleeding
Acute exacerbation of a chronic illness

Measured at the source

pH

6.10

Neutral

Source temperature

28.5°C

Low temp.

Tonicity

Hypertonic

Flow rate

72L/min

Typical

Radon

18Bq/kg

Low

On the certificate

Chronic muscle or joint pain and stiffness (rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains — chronic phase)
Muscle stiffness associated with motor paralysis
Reduced gastrointestinal function (heaviness, bloating)
Mild hypertension
Impaired glucose tolerance (diabetes)
Mild hypercholesterolemia
Mild asthma or emphysema
Hemorrhoid pain
Stress-related symptoms (sleep disorders, depressed mood)
Peripheral circulation disorders
Dry skin

Evidence

（銀泉）神鉄有馬ラジウム鉱泉Ginsen — Shintetsu Arima Radium Spring

ラRadon

Arima's silver water: a simple radioactive cold-mineral spring — colorless, tasteless and odorless, with only 185 mg/kg of evaporation residue. What makes it remarkable is the radon, 2,240 Bq/kg (166 Mache units), roughly twenty times the 111 Bq/kg threshold at which Japanese law calls a spring radioactive, placing it firmly in the hormesis tradition. At 20.3 °C it is a cold source and is heated for bathing. Alongside the general bathing indications, the posted table lists it specifically for hyperuricemia (gout), rheumatoid arthritis and ankylosing spondylitis.

Good for

Aches & joints

Warmth eases stiffness and raises the pain threshold. Radon and sulfate springs show the strongest evidence for joint and muscle pain.

stiff shoulders

On the certificate:Muscle stiffness associated with motor paralysisRheumatoid arthritisAnkylosing spondylitis

Recovery

Warmth and buoyancy lower stress markers and improve sleep; habitual bathing is linked to lower rates of depression.

fatigue, stress

On the certificate:Autonomic nervous system instabilityConvalescenceFatigue recoveryGeneral health improvement

Take care

Contraindications

Active stage of any illness (especially with fever)
Active tuberculosis
Advanced malignant tumor, severe anemia, or other marked physical debilitation
Severe heart or lung disease causing breathlessness on slight exertion
Severe liver disease with edema
Gastrointestinal bleeding
Any visible bleeding
Acute exacerbation of a chronic illness

Measured at the source

pH

7.16

Neutral

Source temperature

20.3°C

Cold mineral

Tonicity

Hypotonic

Flow rate

59L/min

Typical

Radon

2240Bq/kg

High

On the certificate

Chronic muscle or joint pain and stiffness (rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia, frozen shoulder, bruises, sprains — chronic phase)
Reduced gastrointestinal function (heaviness, bloating)
Mild hypertension
Impaired glucose tolerance (diabetes)
Mild hypercholesterolemia
Mild asthma or emphysema
Hemorrhoid pain
Stress-related symptoms (sleep disorders, depressed mood)
Hyperuricemia (gout)

（金泉）有明1号泉と有明2号泉の混合泉Kinsen — Ariake No.1 and No.2 Blended Spring

Good for

Aches & joints

Warming

Cuts

Recovery

Take care

Measured at the source

On the certificate

（金泉）極楽泉源Kinsen — Gokuraku Gensen

Good for

Warming

Aches & joints

Cuts

Recovery

Take care

Measured at the source

On the certificate

（金泉）熱泉1号Kinsen — Nessen No.1

Good for

Warming

Aches & joints

Cuts

Recovery

Take care

Measured at the source

On the certificate

温泉病院 金泉2号Onsen Hospital Kinsen No.2

Good for

Aches & joints

Warming

Smooth skin

Cuts

Recovery

Take care

Measured at the source

On the certificate

株式会社□□ワインWine company well (source name partly illegible)

Good for

Warming

Cuts

Recovery

Take care

Measured at the source

On the certificate

（銀泉）神鉄有馬ラジウム鉱泉Ginsen — Shintetsu Arima Radium Spring

Good for

Aches & joints

Recovery

Take care

Measured at the source

On the certificate

温泉病院金泉2号Onsen Hospital Kinsen No.2