Hydrology studies the principles of water movements over the Earth. The main aim of the hydrological research is to define an occurrence of water, its circulation, spatial distribution, physical and chemical properties, and it relation to biosphere.

Hydrochemistry and Technology

Drinking water treatment is a technological branch dealing with removal of undesirable impurities from water. The most employed method is a formation of suspension by the means of dosing and mixing coagulants and subsequent separation of formed suspension by sedimentation and/or filtration.