Lake Toya Onsen, Toyako, Hokkaido
Toyako Manseikaku Lakeside Terrace Day Use
A lakeside hotel bath with large public bathing areas that alternate between Hoshi-no-Yu and Tsuki-no-Yu by date and gender. The spring figures describe the hotel's shared supply, not a separate analysis of each bath.
Check before bathing
- Opening hours
- Day-use admission details and current hours should be checked with the hotel before visiting; the profile reviewed confirms the day-use page but does not provide a fully verified schedule here.
Spring & water temperature
- Spring-source temperature
- 50.5°C for the shared mixed supply.
- Bathing temperature
- No fixed pool temperature published.
- Spring source
- Toyako Onsen mixed supply used by the hotel; not a separate well assigned to Hoshi-no-Yu or Tsuki-no-Yu.
- Spring classification
- Sodium-calcium chloride spring; neutral, low-tonicity and high-temperature.
- pH
- 6.8 on site; 6.95 in the laboratory.
- Flow rate
- No figure safely attributable to the current mixed supply was confirmed.
- Water handling
- Natural spring water is supplied to designated bathing areas, including Hoshi-no-Yu and Tsuki-no-Yu. Current data do not fully specify water addition, heating, circulation or disinfection for each pool.
The 2023-10-31 sample date applies to the shared-supply analysis. Pool-specific treatment details remain incomplete.
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.
