Ageo Tennen Onsen Hibiki no Yu
Ageo, Saitama, Japan
- Location
- Ageo, Saitama, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Ageo Tennen Onsen Hibiki no Yu is located in Ageo, Saitama prefecture, north of Tokyo. The natural sodium-chloride water emerges at around 41°C. The site includes an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Ageo, a commuter city north of Tokyo, yields surprisingly dark kuro-yu sodium-chloride waters that rise from ancient marine sediments deep beneath the Kanto plain; Hibiki no Yu (resonant waters) is popular with Tokyo-area residents seeking a genuine natural spring without leaving the metropolitan zone — the deep black water is dramatically different from typical clear bath water.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.