Fresh water ponds are vital for the survival of all creatures. It is necessary to ensure the quality of water for a long time. The species richness of pond is strongly influenced by the anthropogenic activities of human. The pollution of the pond directly effects the organisms living in it. little is known about how contaminants determine the habitat selection by the aquatic insects. In this study this is an attempt to show that how insecticide carbaryl and its commercial counter parts sevin can affect the habitat selection. Contaminated pond receives 30 fold more adult beetle and heteropterans and 18 fold more Culex mosquito and chironomid midge larvae.