Rubuchaka is a still natural artesian water originating from the village of Rubuchaka in the Garzê Tibetan Autonomous Prefecture of Sichuan Province, China. Its source is located at an elevation of more than 3,700 meters in a mountainous region shaped by the geological processes of the Himalayas. The water rises through deep fractures in granite rock, gradually acquiring naturally occurring minerals during its underground journey. It contains approximately 195 milligrams of total dissolved solids per liter, placing it in the low-minerality category. Its pH value of 7.1 gives it a neutral character. It is particularly distinguished by its silica content, which amounts to approximately 97 milligrams per liter according to the available water analysis. The water also contains around two milligrams of chloride and one milligram of sulfate per liter. Its nitrate concentration is below 0.05 milligrams per liter, indicating a particularly low level of this compound. Rubuchaka is bottled without the addition of carbon dioxide, preserving its still and neutral profile. Its low mineral content contributes to a mild taste without pronounced salinity or heaviness. The name of the water is associated with the local spring and a Tibetan legend about three sisters that forms part of the region’s cultural heritage.