According to Ministry of the Environment statistics, Wakayama (Kinki) has 50 onsen areas and 506 hot-spring sources. This page lists 22 onsen in Wakayama with their water types. The most common water type among them is Chloride Spring (8 onsen).
Source: Ministry of the Environment, FY2024 Hot Spring Utilization Survey (as of March 31, 2025). Best-known onsen = most annual Wikipedia views.
| Water Type | Count | Share |
|---|---|---|
| Chloride Spring | 8 | 36% |
| Sulfur Spring | 6 | 27% |
| Bicarbonate Spring | 5 | 23% |
| Simple Thermal Spring | 1 | 5% |
| Carbon Dioxide Spring | 1 | 5% |
| Unknown | 1 | 5% |
| Facility | Water Type |
|---|---|
| Saki no Yu An outer bath of Shirahama Onsen, one of Japan's oldest hot springs, known for its open-air bath overlooking the Pacific Ocean. | Chloride Spring Sodium – chloride spring |