The purpose of this study was to determine the types and abundance of microplastics in Tubifex sp., water, and sediment of Sail River. This research was conducted from Januari to March 2024. Sampling was carried out once a month for thee months at 3 stations. Surface water samples of 100 liters were collected and filtered using plankton net No. 25, while sediment and Tubifex sp. samples were ta…