Abstract
This study aims to explore the potential of new microorganisms for bio-purification of polluted reservoirs in Northern Kazakhstan. Through laboratory experiments involving field collection of hydrobiological samples and screening of new strains of microorganisms, the study suggests that biological purification using organic and inorganic compounds found in polluted waters as a nutrient medium is the most effective method. This research contributes to the development of effective strategies for addressing pollution in Northern Kazakhstan's water resources and highlights the potential of using microorganisms as a tool for environmental remediation. The significance of the research lies in the fact that it proposes a solution to the issue of pollution in reservoirs in Northern Kazakhstan through the introduction of new strains of microorganisms, contributing to the development of effective strategies for improving water quality and minimizing the negative impact of pollutants on the hydrosphere.