This study was conducted in Tanjung Balai Kota Waters, Karimun Regency, in January with the aim of evaluating the correlation between phytoplankton abundance and Total Suspended Solids (TSS) and analyzing TSS distribution using ESA Sentinel 2 MSI Level 2A Satellite imagery. Research methods include field surveys for data collection of water quality parameters, phytoplankton, and TSS, followed b…