The Doubrava mineral spring (new name Pramen století) is a freely accessible mineral spring in Doubrava, a local part of the town of Aš in the Cheb district of the Karlovy Vary region. The bedrock of the spring in the alluvial sediments of the Bílý Halštrov consists of the Ore Mountains-Smrčín crystallinic units. The isolated spring belongs to the group of mineral springs in the wider area of the Saxon spa Bad Elster.
Doubrava u Aše na dobové pohlednici
The temperature of the spring is relatively constant at around 8.5 °C, the total mineralization is 3,860 mg/liter. The dissolved carbon dioxide content is around 1,600 mg/liter, which gives the mineral water a pleasant taste. The mineral water has an increased content of silicon dioxide (SiO2) of 55 mg/liter. The pH value is 5.3. The yield is relatively low, according to measurements from January 1975 it is 1.2 liters/min. The mineral spring is freely accessible. The road from Aš to the Doubrava/Bad Elster border crossing leads around the brick pavilion in the middle of the Doubrava. In addition to the road, the mineral water can be accessed along a yellow-marked tourist route and an educational trail called the Valley of Bílého Halštrov. Near the pavilion are the remains of a historical paper mill.
Photo 1: Pavilion with mineral water spring Photo 2: Doubrava tourist spot Photo 3: Remains of the old paper mill