Chiyoda Radon Onsen Center
Chiyoda, Ibaraki, Japan
- Location
- Chiyoda, Ibaraki, Japan
- Water type
- radioactive
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
RadonLithiumBicarbonates
Chiyoda Radon Onsen Center, in Chiyoda, Ibaraki prefecture, draws radioactive (radon) water at 38°C with a pH of 7.3. The facility includes an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Chiyoda Radon Onsen Center is a rare radon-bearing spring in Ibaraki Prefecture, where naturally occurring low-level radioactivity is prized in traditional Japanese balneology for its reputed effects on metabolism and immunity. The waters are colorless and odorless, making the experience deceptively gentle. Staff can explain the radon measurement data displayed at the entrance for curious visitors. This community-run center offers outstanding value in a setting of quiet rural calm.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features radioactive water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).