Increasing micro plastic concentration in the coastal environment is a severe threat to the marine ecosystem and indirectly to human society depending on the marine environment. Also, the surface and subsurface water quality parameters are the indicators of the usability of the water sources for human activities. The primary source of micro plastic is the river systems from land to sea. This study establishes a correlation between water quality parameters and micro plastic concentration to find the most suitable quality parameter for finding the micro plastic concentration in urban coastal estuaries of Chennai coast, Tamil Nadu, India. Twenty water and sediment samples from Adayar,Coovum,Kovalam estuaries and mangroves area were collected. The samples were tested for basic physico-chemical parameters such as temperature, pH, salinity in the field by hand instruments, EC, Turbidity, TDS, DO, BOD and CODin the laboratory by standard procedure and micro plastic concentration was analyzed using Fourier Transform Infrared Spectroscopy (FTIR) study and imaging has done with Digital Microscope after digestion of organic matter, density separationand filtered by vacuum filter. From this analysis,were identified the predominant kinds of micro-plastics are polyethylene, polypropylene, and polystyrene by FTIR and were identified filaments, pellets and fibers by microscope imagine. Correlation tests such as Pearson’s and Spearman’s are performed based on the initial Normality and Homogeneity test. The results show that all the parameters are significantly not correlated with the Micro plastic Concentration. This study should be one of the first baseline studies for microplastic loads in South Indian streams and should be complemented with further environmental sampling before, during and after the monsoon season to get more detailed information on the storage and transportation of fluvial microplastics under different weather conditions.