IMPACT OF NEGATIVE FACTORS OF ENVIRONMENT ON NATURAL WATER SAFETY
The article deals with the data reflecting the content of dangerous chemical compounds in open and sheltered water sources of Ilek district, Orenburg region. The radionuclides activity, the content of macro- and microelements, nitrates, chemical structure of water, as well as the hydrogen value (pH) have been studied. According to the study survey the open water sources on the territory of Ilek district are relatively safe by the chemical content, as to the closed ones they have the tendency to chlorination and sulfonation, this being a negative factor. It is shown that radionuclides activity in water is within the sanitary standards and is not dangerous for animal and human organisms. The content of cadmium, iron and lead in the open water sources exceeds the norms by 3.0-3.4, 1.08-7.15 and 1.1-2.24 times respectively, in the closed water supply points the increase of the above elements content is by 11.7, 5.19 and 2.42 accordingly.