All living things depend on water resources for sustenance, yet as anthropogenic activity has increased, most water bodies have been polluted with chemical and biological contaminants. It incorporates animal waste, pesticides, dyes, hydrocarbons, heavy metals, and more. Such exposures raise the possibility of developing health risks such heavy metal toxicity, diarrhoea, and viral or bacterial infections. The statistical analysis of the physiochemical traits at five different stations revealed that physical circumstances were insignificant (p< 1.0) at the 0.05 p level, however chemical components were not significant (p< 0.9691) at 0.05 p level. Regarding the concentration of cadmium, virivilai stations exhibited higher amount of 0.171 ± 0.0150 ppm/mL compared with other stations. The concept of adsorption property of metal nanoparticles was brought up by this heavy metal hazards; consequently, NPs has vast surface area to interact with target. In the present research, an ethanolic extract of the chlorophyta (Ulva lactuca) and its silver nanoparticles were used to create a comparative model of Cd adsorption. Ulva AgNPs had more effective adsorption properties than extract alone, according to the results of this comparative Cd adsorption behaviour study. For a better understanding of the Cd adsorption process for heavy metal bioremediation, more standardisation and characterisation has to be performed.