Yumoto Onsen, Yuda Onsenkyo, Nishiwaga, Iwate Prefecture
Ushi-no-Yu Public Bath
A low-cost local bath using Yumoto No. 3 spring. Current tourism-association information gives a shorter afternoon schedule than an older town page, so plan around 14:00–20:00 and verify before an early visit.
Check before bathing
- Opening hours
- 14:00–20:00, according to the current Nishiwaga Tourism Association and related operator information. Adults ¥440; elementary and junior-high students ¥260. The town's January 2026 page still lists 07:00–21:00, an unresolved schedule conflict; do not rely on the older early opening without checking. Local buses from Hottoyuda Station serve Yumoto Onsen; the town fare is ¥100 in cash per ride.
Spring & water temperature
- Spring-source temperature
- 88°C for Yumoto No. 3 source; this is not the bath temperature.
- Bathing temperature
- No fixed pool temperature is published.
- Spring classification
- Sodium-sulfate chloride spring.
- pH
- 8.36.
- Flow rate
- 16 L/min.
- Water handling
- The current operator-related information publishes spring analysis figures but does not provide complete water-addition, heating, circulation or disinfection details for each pool.
Bathing indications
Local information lists general bathing indications for sulfate- and chloride-spring water. These are not treatment guarantees.
The 88°C figure is the source temperature, not a bathing-pool setting. First-party opening-hour listings conflict; avoid planning around the older 07:00 opening.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
