| Su'ao Cold Spring | |
| Other Name: | 蘇澳冷泉 |
| Photo Width: | 250px |
| Location: | Su'ao, Yilan County, Taiwan |
| Coordinates: | 24.5967°N 121.851°W |
| Hot Spring Type: | Cold spring |
| Temperature: | 22°C |
Su'ao Cold Spring is a cold spring in Su'ao Township, Yilan County, Taiwan.
The cold spring was discovered by the Japanese army in 1928.[1]
Su'ao Cold Spring has a spring water temperature of 22 °C. It is both batheable and drinkable, and it has a pH of 5.5. According to Japanese researchers, the cold spring contains carbonic ion concentrations of 68ppm, the highest of all springs in Taiwan. Its sodium ion concentrations were 14.3ppm and calcium ion 10.7ppm. Su'ao Cold Spring is the only calcium hydroxy carbonic spring in Taiwan.
Su'ao Cold Spring contains a generous volume of carbon dioxide, which was in the past used to produce Ramune (Natural soda water).