An assessment of temporal variations in physicochemical and microbiological properties of barmouths and lagoons in Chennai (Southeast coast of India)

► Quality through physicochemical and microbiological means. ► Behaviour due to anthropogenic activities and in polluting the coastal waters. ► Physicochemical and microbial interrelation through PCA technique. ► Changing pattern during various seasons prevailed in the sampling stations. ► Fact that transformation time varies with that of the actual environmental seasons.