- 1Slovak Hydrometeorological Institute, Department of Surface Water Quantity, Slovakia (katarina.kotrikova@shmu.sk)
- 2Slovak Hydrometeorological Institute, Department of Groundwater, Slovakia (valeria.slivova@shmu.sk)
The main source of drinking water in Slovakia is groundwater, with about 80% of the water used for public supply coming from groundwater reserves. In Slovakia, we have areas that are supplied with drinking water from surface water trapped in water reservoirs such as, for example, water reservoir Starina in the east part of Slovakia, Nová Bystrica reservoir in the north of Slovakia, and in the south of the central part of Slovakia is Hriňová reservoir. In 2022, 83% of drinking water was sourced from groundwater abstractions and 17% from surface water abstractions. These abstractions are processed and evaluated as part of Slovakia’s water resource balance at the river basin level. We analyzed annual abstraction data for individual districts based on the intended use of the water. The data were examined over 10 years (2011–2021), using long-term average values for each district and sector (e.g., public water system supply, agriculture, and industry), and compared with consumption data for 2022. The increase or decrease in groundwater abstractions was then evaluated. The year 2022 was selected for analysis due to its classification as a dry year, characterized by low precipitation and runoff. The analysis results are presented in a map that shows surface and groundwater abstractions across Slovakia.
The analysis indicates that, in the dry year of 2022, 51% of surface and groundwater abstractions were used for public water supply systems, 5% for industrial purposes, and 44% for agricultural needs. Of the groundwater abstractions, 72% were allocated to public water supply, 4% to agriculture, and 24% to industry. On the other hand, the surface water abstractions were distributed as follows: 21% for public water supply, 6% for agriculture, and 73% for industrial purposes. Compared to the period from 2011 to 2021, there was a 6% increase in groundwater abstractions in 2022 (with a 3% increase for public water supply systems, a 14% increase for agriculture, and a 14% decrease for industry).
Acknowledgement
This work was supported by the Slovak Research and Development Agency under the Contract no. APVV-23-0332.
How to cite: Kotrikova, K. and Slivova, V.: Analysis of the surface water and groundwater abstractions for the public water supply, agricultural and industrial purposes in the period 2012-2021 in comparison to 2022 , EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-9128, https://doi.org/10.5194/egusphere-egu25-9128, 2025.
