Аңдатпа
content and the degree of water hardness exceed the standards of the Republic of Kazakhstan. In terms of heavy metals and microcomponents (a total of 16 elements were identified), near the Ust-Kamenogorsk city the Fe content is 1.2-2 times higher than the MPC. Results of the calculations of the comprehensive water pollution index (CWPI) of the Irtysh River water at the Kazakhstan territory correspond to standard clean water.