o:1082 Water treatment technology upgrade resulting from water quality changes in reservoirs en Abstract: Due to the change in water quality in the reservoirs used for water supply purposes, as well as the poor condition of the potable water treatment plants, there is a need to improve the existing treatment processes to achieve the required efficiency and safety in the operation of the system. This paper describes the causes and issues in the operation of specific plants for processing potable water in Serbia and the applied technical solutions to improve the technological process of water treatment, with a particular focus on resolving the issue of water supply in the City of Užice, caused by the appearance of cyanobacteria in the Vrutci reservoir. 1552100 978-86-82565-55-0 2022-12-14T07:33:24.457Z 44 no 46 Zorana Radibratović Institut za vodoprivredu "Jaroslav Černi" 0009-0007-4444-5481 Nenad Milenković Institut za vodoprivredu "Jaroslav Černi" person Biljana Cakić Institut za vodoprivredu "Jaroslav Černi" person Bojan Obušković Institut za vodoprivredu "Jaroslav Černi" person 0009-0006-3407-4245 Dušan Đurić Institut za vodoprivredu "Jaroslav Černi" person application/pdf 1025628 https://unilib.phaidrabg.rs/o:1082 no yes 1 70 92000004 71A04 Contemporary Water Management: Challenges and Research Directions, Proceedings of the International Scientific Conference in the Honour of 75 Years of the Jaroslav Černi Water Institute, October 19-20 2022, Belgrade 415 429 Jaroslav Černi Water Institute 2022 Received: September 8, 2022 Revision: September 22, 2022 Accepted: September 26, 2022