THE MOST IMPORTANT POLLUTANTS OF EASTERN SLOVAKIA WATERS

As the area of the Slovak Republic is 49,036 km super(2), there are many potential contaminants that can affect its population. In the socialist era the town of Strazske located in the Kosice Municipal Region was the centre of production of polychlorinated biphenyls (PCB) inter alia and nowadays about 3,500 metric tonnes of PCB are persisting there and present the greatest PCB environmental risk in the central Europe. The heavy metal contamination in Slovakia is caused by the natural background as well as by the former mining activities. In Slovakia there are about 17 thousand old mining works, i.e. adits, stocks, and impoundments. Contamination of the ground and surface waters in the Spis-Gemer Ore Mountain (SGOM) area is caused by mine drainage. Arsenic, antimony, copper, mercury, cadmium, and zinc are the main pollutants of natural waters. All contaminated areas are currently monitored according to the national and EU legislation and nutrient load reduction programmes. As a result of this the level of inorganic and organic micropollutants in surface water and water reservoirs will be reduced together with the negative impact of water pollution on the environment in Eastern Slovakia region.