Best Radioactive Spring (Radium Spring) Hot Springs Ranking
31 hot springs
Radioactive springs contain trace amounts of radioactive substances such as radon. Despite the name, the levels are extremely low and harmless to the human body, and this spring type is actually associated with potential health benefits. Misasa Onsen is a famous example.
The trace radiation is believed to provide a hormesis effect that may boost immunity and relieve pain, with traditional claims of benefits for gout, neuralgia, and rheumatism.
Ranking Criteria
Misasa Onsen Kiya Ryokan
Radioactive-containing
Etajima-so
Weakly Radioactive-containing / Sodium - Chloride Strong Salt Spring
Chikugogawa Onsen Ryokan Fukusenka
Alkaline Simple Hot Spring / Simple Sulfur Spring / Weakly Radioactive-containing
Furuyu Onsen Saga Fuga (ONCRI)
Simple Weakly Radioactive Spring
Yumen Onsen Yumen Kanko Hotel Yume no Sato
Alkaline Simple Hot Spring / Radioactive-containing
Ryuzaki Onsen Chidori
Weakly Radioactive-containing
Kawatana Onsen Tamatsubaki Ryokan
Weakly Radioactive-containing
Sekigane Onsen Seki no Yu Public Bathhouse
Simple Weakly Radioactive Spring
Awakura Onsen Motoyu
Simple Weakly Radioactive Spring / Radium Spring
Kogashima Onsen Kogashimaso
Simple Weakly Radioactive Spring
Takedao Onsen
Simple Hot Spring / Weakly Radioactive-containing
Natural Radium Onsen Taisanji Nadeshiko no Yu
Simple Weakly Radioactive Spring
Konda Yakushi Onsen Nukumori no Sato
Weakly Radioactive-containing
Masutomi Radium Onsen Furoukaku
Radioactive-containing
Kumanokawa Onsen Motoyu Kumanokawa Bathhouse
Simple Weakly Radioactive Spring
Kumanokawa Onsen Oyado Yumechidori
Simple Weakly Radioactive Spring
Hibagongo Onsen Suzuran-no-Yu
Simple Weakly Radioactive Spring
Hiroshima Municipal Lodge Yuki Lodge
Simple Weakly Radioactive Spring
Kurahashi Katsuragahama Onsenkan
Weakly Radioactive-containing / Sodium - Chloride Spring
Ushiobara Onsen Matsukawa
Simple Radioactive Spring
Onomichi Fureai no Sato Natural Hot Spring
Simple Weakly Radioactive Spring
Komo Onsen Unokoso
Simple Weakly Radioactive Spring
Yuki Onsen Kajikaso
Simple Weakly Radioactive Spring
Deyu Onsen Seikokan
Simple Weakly Radioactive Spring
Kotohira Onsen Kotohira Kadan
Simple Weakly Radioactive Spring
Matsuba Onsen Taki no Yu
Simple Weakly Radioactive Spring
Amami Onsen Nantenen
Simple Weakly Radioactive Spring
Nose Onsen
Simple Weakly Radioactive Spring
Makino Shiratani Onsen Hachiojiso
Simple Weakly Radioactive Spring
Ishiyama Onsen Bodaiju
Simple Radioactive Spring
Kumanokawa Onsen Tousenkyou Onsenkan Toshoka
Simple Weakly Radioactive Spring
Comparison of Ranked Hot Springs
| Name | Prefecture | Water Quality | Source-fed | Onsen Value |
|---|---|---|---|---|
| Misasa Onsen Kiya Ryokan | Tottori | Radioactive-containing | Natural Source Flow | 5 |
| Etajima-so | Hiroshima | Weakly Radioactive-containing, Sodium - Chloride Strong Salt Spring | Partial Natural Flow | 3 |
| Chikugogawa Onsen Ryokan Fukusenka | Fukuoka | Alkaline Simple Hot Spring, Simple Sulfur Spring, Weakly Radioactive-containing | - | 3 |
| Furuyu Onsen Saga Fuga (ONCRI) | Saga | Simple Weakly Radioactive Spring | Partial Natural Flow | 3 |
| Yumen Onsen Yumen Kanko Hotel Yume no Sato | Yamaguchi | Alkaline Simple Hot Spring, Radioactive-containing | Partial Natural Flow | 3 |
| Ryuzaki Onsen Chidori | Yamaguchi | Weakly Radioactive-containing | Natural Source Flow | 3 |
| Kawatana Onsen Tamatsubaki Ryokan | Yamaguchi | Weakly Radioactive-containing | Natural Source Flow | 3 |
| Sekigane Onsen Seki no Yu Public Bathhouse | Tottori | Simple Weakly Radioactive Spring | Natural Source Flow | 3 |
| Awakura Onsen Motoyu | Okayama | Simple Weakly Radioactive Spring, Radium Spring | Partial Natural Flow | 3 |
| Kogashima Onsen Kogashimaso | Fukui | Simple Weakly Radioactive Spring | Natural Source Flow | 3 |
| Takedao Onsen | Hyogo | Simple Hot Spring, Weakly Radioactive-containing | Natural Source Flow | 3 |
| Natural Radium Onsen Taisanji Nadeshiko no Yu | Hyogo | Simple Weakly Radioactive Spring | Natural Source Flow | 3 |
| Konda Yakushi Onsen Nukumori no Sato | Hyogo | Weakly Radioactive-containing | Natural Source Flow | 3 |
| Masutomi Radium Onsen Furoukaku | Yamanashi | Radioactive-containing | Natural Source Flow | 3 |
| Kumanokawa Onsen Motoyu Kumanokawa Bathhouse | Saga | Simple Weakly Radioactive Spring | Natural Source Flow | - |
| Kumanokawa Onsen Oyado Yumechidori | Saga | Simple Weakly Radioactive Spring | Natural Source Flow | - |
| Hibagongo Onsen Suzuran-no-Yu | Hiroshima | Simple Weakly Radioactive Spring | Circulation System | - |
| Hiroshima Municipal Lodge Yuki Lodge | Hiroshima | Simple Weakly Radioactive Spring | Natural Source Flow | - |
| Kurahashi Katsuragahama Onsenkan | Hiroshima | Weakly Radioactive-containing, Sodium - Chloride Spring | Partial Natural Flow | - |
| Ushiobara Onsen Matsukawa | Hiroshima | Simple Radioactive Spring | - | - |
| Onomichi Fureai no Sato Natural Hot Spring | Hiroshima | Simple Weakly Radioactive Spring | Partial Natural Flow | - |
| Komo Onsen Unokoso | Hiroshima | Simple Weakly Radioactive Spring | Circulation System | - |
| Yuki Onsen Kajikaso | Hiroshima | Simple Weakly Radioactive Spring | Natural Source Flow | - |
| Deyu Onsen Seikokan | Niigata | Simple Weakly Radioactive Spring | Natural Source Flow | - |
| Kotohira Onsen Kotohira Kadan | Kagawa | Simple Weakly Radioactive Spring | - | - |
| Matsuba Onsen Taki no Yu | Osaka | Simple Weakly Radioactive Spring | Circulation System | - |
| Amami Onsen Nantenen | Osaka | Simple Weakly Radioactive Spring | Natural Source Flow | - |
| Nose Onsen | Osaka | Simple Weakly Radioactive Spring | Partial Natural Flow | - |
| Makino Shiratani Onsen Hachiojiso | Shiga | Simple Weakly Radioactive Spring | Circulation System | - |
| Ishiyama Onsen Bodaiju | Shiga | Simple Radioactive Spring | Natural Source Flow | - |
| Kumanokawa Onsen Tousenkyou Onsenkan Toshoka | Saga | Simple Weakly Radioactive Spring | Natural Source Flow | - |
Frequently Asked Questions
Q.Is a radioactive spring harmful to the body?
A.The radioactive substances present are in extremely trace amounts, comparable to levels found naturally in the environment, and are not considered harmful. In fact, the low-dose radiation is believed to provide a beneficial hormesis effect.
Q.What conditions can a radioactive spring help with?
A.It is traditionally said to help relieve chronic pain conditions such as gout, neuralgia, and rheumatism.
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