This research to analyze the heavy metals sediment from the Kosasthalaiyar river using sophisticated Atomic Absorption Spectrometer, subsequently pollution indices like Geo-accumulation Indices (IGeo), Contamination Factor (CF), Enrichment Factor (EF) and Pollution Load Index (PLI) to determine the intensity of heavy metal in sediment. Eventually, Geospatial technique was used, Factor analysis that was used to evaluate the heavy metals revealed that the sources of the toxic substances in the study area's sediments were both natural and human.In this research Geo accumulation Index showed that Fe, Mn, Cr, Cu, Ni, Pb, and Zn were severely contaminated in the surface resulting of the Coast