Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

Vanished spring of mineral water at the Čachovice village, Chomutov district, Czech Republic


Petr Hrazdíra

Geoscience Research Reports 50, 2017, pages 269–272
Map sheets: Chomutov (02-33)

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Published online: 18 December 2017

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A mineral spring known as Sv.Václav (St. Wenceslaus) was located at the village of Čachovice near the town of Chomutov, Czech Republic. The area of the village lies along the Lužice creek about 2 km SE of the village of Březno. Water from the spring used to be earlier widely used for drinking cures and spa treatment. Since 1970, the village has been covered by a spoil bank from the nearby coal open cast mine, and the mineral spring disapeared. The exact location of the original spring is unknown.
Older information about the localization of the spring includes only vague descriptions: northern edge of the village, the center of the village, or spa marks in old maps. In 1945, the spring was exploited through a new well (discharge 7,28 l.s-1) and from a new restored spring water tapping (2,95 l.s-1). After the destruction of the village along with the spring in 1970, the spring was later caught by an exploratory borehole CA-16 in 1981. The overflow from the borehole supposedly continued until 2002. During author’s fieldwork in August 2014, the well was not found, and neither was observed any overflow or wetland in the area of the abandoned and destructed well. The last attempt to restore the spring took place in 2009, with a negative result due to some problems during the boring. The nearby village of Březno and the company Severočeské doly, a.s., have continued to restore the spring regardless of a failed attempt in 2009, intended to capture a new spring.
There are available three chemical analyses of the spring water retained from years 1883, 1945, and the last one from 1958 (Kačura 1980). Water in the spring had a temperature of around 17 °C showing higher mineralization, especially iron but higher amounts of CO2 were never recorded. Other chemical elements or compounds did not exceed concentrations common in this area, in some cases they were even lower (cf. Table 1).
The origin and/or the infiltration area of the St. Wenceslaus mineral spring are thought to be from crystalline rocks. The chemistry of the water (see Table 1) does not show any increased concentrations of sulfates or lower the pH, which are characteristic of water coming into contact with the coal substance. The water temperature of about 17 °C indicates its origin from rather deeper seated crystalline gneisses in the basement and faults along which the water ascended to the surface.