The anthropogenic transformation of the water bodies of the European North of Russia

Water bodies of the European North of Russia are classified according to the water contamination level. The high degree of contamination of particular river sections in the European North is shown to be caused by the accumulation of toxic heavy metal compounds and other pollutants. The values of the anthropogenicaltered natural background of water bodies were estimated. It was shown the content of phenol and of copper compounds, of iron and of nickel to exceed the maximum allowable concentrations dozens of times.