Water resources availability is a determining factor of human existence. Despite the huge volume of water in the hydrosphere, water resources include only those waters that may be used by humans for drinking and household water supply and those ones that support the sustainable existence of living ecosystems.

The issues of drinking water consumption are particularly important. Only fresh surface water and groundwater, complied with quality standards, may be used for drinking water supply.

At the same time, precisely surface waters are under influence of anthropogenic load primarily due to their depletion and chemical and biological pollution. In some cases, these waters pass into the volume of water unusable for its consumption and threaten the survival of ecosystems.

In Ukraine, similarly to the European Community [1], a policy aimed primarily at stabilizing the human impact on surface water, and improving the ecological status of surface waters in the country was adopted.