Natural resources - water
In Belgrade, water supply is solved in a combined manner - about 3427 liters of water used every second is underground water, while 3460 liters comes from rivers. Such a balanced relationship is not present in the rest of Serbia, where as many as 18900 liters came from underground sources, 3065 from reservoirs, and 4880 from river flows. This means that more than 70 percent of the water supply relies on groundwater. Since the issue of groundwater quality has been better and more closely monitored, there has been a shift in its quality in the European Union. In Serbia, unfortunately, the situation is different