Best Acidic Spring Hot Springs Ranking
14 hot springs
Acidic springs have a pH below 3, giving them strong antiseptic properties. Known as effective for chronic skin conditions, famous examples include Kusatsu and Tamagawa onsen.
Strong antibacterial and antiseptic effects are said to help with chronic skin conditions and athlete's foot. However, the water can be quite irritating, so those with sensitive skin should avoid long soaks and rinse off with fresh water afterward.
Ranking Criteria
Takayu Onsen Tamagoyu
Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type)
Renge Onsen Hakubadake Renge Onsen Lodge
Simple Acidic Spring / Magnesium - Bicarbonate Spring / Simple Sulfur Spring / Acidic - Aluminum-containing - Sulfate Spring
Akita-Yakeyama Ioutori-no-Yu
Simple Acidic Spring
Doroyu hot spring
Simple Hot Spring / Simple Sulfur Spring / Acidic - Iron(II) - Sulfate Spring
Tsukahara Onsen Kako-no-Izumi
Acidic - Iron(II) - Sulfate Spring / Iron(II)-containing - Aluminum - Sulfate Spring
Washikura Onsen Kogen Ryokan
Simple Sulfur Spring / Acidic - Iron(II) - Sulfate Spring
Takayu Onsen Adachiya
Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type)
Jigoku Onsen Seifuso
Simple Sulfur Spring (Hydrogen Sulfide Type) / Simple Acidic Spring
Shiratori Onsen Kamiyu
Simple Acidic Spring
Fuigo Onsen
Acidic - Copper-containing - Iron(II) - Sulfate Spring
Akaishi Onsen
Simple Acidic Spring
Zao Onsen Kawarayu Public Bathhouse
Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type)
Iwojima Higashi Onsen
Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type) / Aluminum - Iron(II) - Sulfate Spring
Zao Onsen Oomiya Ryokan
Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type)
Comparison of Ranked Hot Springs
| Name | Prefecture | Water Quality | Source-fed | Onsen Value |
|---|---|---|---|---|
| Takayu Onsen Tamagoyu | Fukushima | Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type) | Natural Source Flow | 5 |
| Renge Onsen Hakubadake Renge Onsen Lodge | Niigata | Simple Acidic Spring, Magnesium - Bicarbonate Spring, Simple Sulfur Spring, Acidic - Aluminum-containing - Sulfate Spring | Natural Source Flow | 5 |
| Akita-Yakeyama Ioutori-no-Yu | Akita | Simple Acidic Spring | Natural Source Flow | 4 |
| Doroyu hot spring | Akita | Simple Hot Spring, Simple Sulfur Spring, Acidic - Iron(II) - Sulfate Spring | Natural Source Flow | 4 |
| Tsukahara Onsen Kako-no-Izumi | Oita | Acidic - Iron(II) - Sulfate Spring, Iron(II)-containing - Aluminum - Sulfate Spring | Natural Source Flow | 3 |
| Washikura Onsen Kogen Ryokan | Fukushima | Simple Sulfur Spring, Acidic - Iron(II) - Sulfate Spring | Natural Source Flow | 3 |
| Takayu Onsen Adachiya | Fukushima | Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type) | Natural Source Flow | 3 |
| Jigoku Onsen Seifuso | Kumamoto | Simple Sulfur Spring (Hydrogen Sulfide Type), Simple Acidic Spring | Natural Source Flow | 3 |
| Shiratori Onsen Kamiyu | Miyazaki | Simple Acidic Spring | Natural Source Flow | 3 |
| Fuigo Onsen | Tokushima | Acidic - Copper-containing - Iron(II) - Sulfate Spring | Natural Source Flow | 3 |
| Akaishi Onsen | Yamanashi | Simple Acidic Spring | Circulation System | 3 |
| Zao Onsen Kawarayu Public Bathhouse | Yamagata | Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type) | Natural Source Flow | - |
| Iwojima Higashi Onsen | Kagoshima | Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type), Aluminum - Iron(II) - Sulfate Spring | Natural Source Flow | - |
| Zao Onsen Oomiya Ryokan | Yamagata | Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type) | Natural Source Flow | - |
Frequently Asked Questions
Q.What should I be careful of when bathing in an acidic spring?
A.Because the water is highly irritating, it's recommended to avoid long soaks and rinse off thoroughly with a shower afterward. Those with sensitive skin or children should be especially careful.
Q.What benefits does an acidic spring offer?
A.Its strong antibacterial and antiseptic properties are said to help with chronic skin conditions and athlete's foot.
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