洞爺湖温泉
Toyako Onsen (blended source)Mixed source
Sampled at mixing tank
塩
Chloride
+ Sulfate · Bicarbonate
Classification
Sodium-Calcium Chloride spring
Toyako Onsen's blended supply — a mixing of wells 5, 6, 9, 12 and 13 together with the community wells 1, 2, 4, 5 and 6 and the KH-1 collector — is a sodium-led chloride spring with sulfate and bicarbonate layered in for a softer finish. The water arrives at the mixing tank at a warm 50.5 °C and neutral pH, carrying a faint yellow tint and a mild salty edge at the source. Moderately mineralized (about 3.1 g/kg dissolved solids) and generously stocked with metasilicic acid at 170.8 mg/kg, it leaves the kind of silica film on the skin that puts it squarely in the Japanese 'beauty-water' family.
pH
6.80
Neutral
Source temperature
50.5°C
Hot
Tonicity
3.08g/kg
Hypotonic
Flow rate
1,400L/min
Very high
Radon
0.20Bq/kg
Low
- Color
- faintly yellow and clear
- Taste
- weakly salty
- Odor
- odorless
Highlights
- High silica
Analyzed Nov 7, 2023·北海道立衛生研究所