According to Ministry of the Environment statistics, Ibaraki (Kanto) has 39 onsen areas and 157 hot-spring sources. This page lists 14 onsen in Ibaraki 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 | 57% |
| Simple Thermal Spring | 2 | 14% |
| Sulfur Spring | 2 | 14% |
| Bicarbonate Spring | 1 | 7% |
| Other | 1 | 7% |
| Facility | Water Type |
|---|---|
| Tsukuba Wellness Park | Unknown |
| Ukuraku no Yu Jiuo | Unknown |
| Okukuji Daigo no Yu A town-run day-use hot spring facility in the Okukuji Onsen area. | Simple Thermal Spring Simple spring |