o:3353 POLLUTANTS AND WATER QUALITY INDICATORS IN THE FUNCTION OF WATER MANAGEMENT IN CONTEMPORARY SYSTEMS en Abstract: Water on Earth is a vital element of living systems. Water is a medium that enables life and at the same time a medium in which a diverse eco systems exist. Natural waters contain dissolved gases, dissolved organic and inorganic substances and solid suspended materials. The quantities of dissolved and suspended substances are affected by: water temperatures, contact of water with the atmosphere, types of sediment the water is in contact, quantities of rainwater entering surface waters and quantities of waste substances, which are of anthropogenic origin. The results of water quality, according to the methodology of Eurowaternet - Lakes Aggregation of station data, were investigated and presented in a table form and by the location. The estimated value of water quality was obtained, expressed by the appropriate Water Quality Index. Water quality indicators are determined by the Serbian Water Quality Index method. The analyzes are presented by the frequency distribution of the indicators SWQI, nitrate, total phosphorus, ammonium and BOD5. Related to that research, as a result of the applied methodology and the fact that modern water supply systems in the Republic of Serbia have predominantly relied on groundwater reserves, and lately more and more on water abstraction from reservoirs and their use after treatment, a proposal for the management of raw water quality was given. water resources, pollutants, water quality indicators, SWQI, water management 1552099 10.7251/COMEN2301030S 1552102 https://doisrpska.nub.rs/index.php/conterporarymaterials3-1/article/view/9740 2023-11-27T14:01:43.372Z 44 yes 46 Svetlana Stevović Academy of Sciences and Arts Republic of Srpska, Bosnia and Herzegovina Jelena Marković Academy of Technical-Educational Vocational Studies Nis - Vranje Department person Sabahudin Hadrović Institute of Forestry, Belgrade, Serbia person 0000-0002-4820-7938 application/pdf 1743744 https://unilib.phaidrabg.rs/o:3353 no yes 17 70 92000001 Contemporary Materials XIV 1 30 42 Bana Lazarevica 1 78000 Banja Luka Republic of Srpska Bosnia and Herzegovina Academy of Sciences and Arts of the Republic of Srpska 2023