The following were the identified and defined classes of emerging contaminants concern (ECCs): pharmaceutical personal care products (PPCPs), perfluorinated compounds (PFCs), plasticizers, agrochemicals, industrial additives agents (IAAs), flame retardants (FRs), Nanopar-ticles (NPs), steroids hormones, gasoline additives. From 1983 to 1990, an estimated 15,000 metric tons pesticides reported h...