Discipline creates knowledge about the hydrochemistry of natural waters, the theoretical foundations of the physico-chemical and microbiological processes of water treating in simulated conditions and natural conditions. The student will know the physical, chemical and biological properties of water, water anomaly, the role of water on the planet and life in the reservoirs, soil, flora and fauna; hydrochemical classification of natural waters, the processes of formation of the impurity composition of surface and groundwater characterization and classification of natural water impurities.