Kyiv (QHA) - Most of the diseases of Ukrainians are provoked by unsafe drinking water, head of the Environmental Academy department Mykola Kostrov told at a press conference, ForUm reports. "8.5 million cubic meters of waste water annually flow in the water bodies. The main pollutants are industrial enterprises (50.2%) and housing and communal services (48%). We actually discharge drains into our waterways," – stressed Kostrov. He recalled that there are more than 63 thousand large, medium and small rivers in Ukraine. Ecologist does not recommend drink water from rivers and bathe in the Black and Azov seas. "In the current conditions, in many of our water bodies there may be the causative agents of infectious diseases, hepatitis, typhoid fever, and rotavirus. There may be also other problems with the digestive, cardiovascular, endocrine systems," he emphasized. Nevertheless, rivers are characterized by self-purification the former head of the Environmental Inspectorate of Ukraine, Mykhailo Gutsal noted. He believes, if all necessary measures are taken, rivers will self-purify in five years.