WATER SYSTEMS POLLUTION BY SEWAGE OF LARGE CITIES (BASED ON THE EXAMPLE OF THE MOSCOW RIVER)

This article studies the problem of the pollution of big cities' water system by wastewater on the example of the Moscow river. It shows the ways of water objects pollution in big cities, besides, analyses some indicators of pollutants as well as describes somemethods of waters purification. Moreover, the article represents theresults of students-ecologists' poll which is directed to determine future specialists' opinion and viewpoints of specialists in the sphere of water resources pollution