Water quality monitoring in RS has been systematically carried out since 2000, including analysis of biological, physical-chemical, chemical and microbiological parameters and specific pollution substances, as well as of parameters from the list of priority substances since 2007. Quality assessment is carried out in accordance with the Decree on Water Classification and Categorization of Water Courses (RS Official Gazette, No. The development of the environmental monitoring network and the results of parameter analysis in RS between 2004 and 2010 are shown in table 7.1 below.