Microplastics are silent pollutants present in the almost every corner of the planet, even the most isolated. European legislative has recognized the necessity for the monitoring of microparticles, which involves the establishment of monitoring programmes, enabling the assessment of the status of marine waters on a regular basis. Serbia continuously adopts and harmonizes laws and regulations with the regulations of the European Union (EU). Unfortunately, microplastics is not yet the subject of our Regulations. Main source of pollution of oceans with microplastics are rivers, therefore it is necessary to estimate river microplastic emissions to the world's oceans. Microplastics find the way to rivers, mostly from the waste waters from washing machines. Serbia is country with long network of freshwaters, including the second largest river in Europe – Danube. River that flows through many industrial cities, and carries great industrial and communal burden. By detail analysis of Serbian legislative, it was found that no law or regulative considers microplastics as pollutant. Therefore, the monitoring of microplastics is not obligatory. We consider that it is time that Serbia finally recognizes this environmental problem, and includes it in the existing legal framework. We propose that the microplastics in sewage waters are monitored on the regular basis, including tap and bottled waters, to see if there is contamination with microplastics. This information will contribute to establishment of monitoring programmes in Serbia and thus prevent further microplastic pollution. ACKNOWLEDGMENT: This paper is funded by the Agreement on the implementation and financing of scientific research NIO in 2020 of Ministry of Education, Science and Technological Development of the Republic of Serbia (Grants No: 451-03-68/2020-14/ 200032; 451-03-68/2020-14/200134; 451-03-68/2020-14/200026)