Emerging contaminants (ECs) are the part of industrial wastewaters and also reaches the water systems through various existing mechanisms. The presence of ECs in the water and wastewaters is highly toxic to human beings and environment both as well as these disturbs the ecological balance. ECs are sub-divided into different categories involving pharmaceuticals, polyaromatics, nanomaterial, personal care product etc. The presence of various ECs and their metabolites in different aquatic organisms has been reported in various studies. The amounts of ECs in the water as well as wastewaters are detected and reported in various recent researches, but proper guidelines or regulations in particular are not yet available. The emerging contaminants in the aqueous media are of particular concern to the environmentalists across the globe. The present chapter focuses on the ECs in water and wastewaters of different industries and their sources in order to remediate the water streams.