According to Ministry of the Environment statistics, Aichi (Chubu) has 35 onsen areas and 133 hot-spring sources. This page lists 20 onsen in Aichi with their water types. The most common water type among them is Simple Thermal Spring (7 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 |
|---|---|---|
| Simple Thermal Spring | 7 | 35% |
| Chloride Spring | 6 | 30% |
| Unknown | 4 | 20% |
| Bicarbonate Spring | 2 | 10% |
| Radium Spring | 1 | 5% |
| Facility | Water Type |
|---|---|
| Yukichiro | Simple Thermal Spring Weakly alkaline simple spring |
| Higashiura Hana no Yu | Unknown |
| Sanage Onsen Day-Bathing Facility A day-use bathing facility in the Sanage Onsen area. | Simple Thermal Spring Simple spring |