Related by context. Frequent words. (Click for all words.) 62 polychlorinated biphenyls PCBs 60 organophosphates 60 chlorpyrifos 59 pyrethroids 59 arsenic 59 contaminant 58 tetrachlorethylene 58 carbofuran 57 PFOS 57 pesticides 56 contaminants 56 Sulfate 55 Nitrates 55 PBDE 55 aflatoxins 55 suspected carcinogen 55 methyl mercury 54 Malathion 54 malathion 54 paraquat 54 nitrates 54 Aspergillus 54 Triclosan 54 fecal coliform bacteria 54 potentially carcinogenic 53 endocrine disruptors 53 trichlorethylene 53 naturally occurring bacteria 53 coliforms 53 Contaminants 53 toxicants 53 #,# dioxane 53 coli 53 alkaloids 52 Pollutants 52 dioxins 52 hormone disrupting 52 atrazine 52 PAHs 52 pesticide 52 Pesticides 52 selenium 52 toxicity 52 arsenic contamination 52 fecal coliform 52 Atrazine 52 toxin 52 fecal contamination 52 Acrylamide 52 triclosan 51 Dioxins 51 PCBs 51 coliform bacteria 51 PBDEs 51 enterococci 51 pesticide residues 51 Nitrate 51 furans 51 Contamination 51 Cryptosporidium 51 nitrate 51 toxic pesticides 51 synthetic pesticides 51 fecal bacteria 51 Didymo 51 fumigants 51 Btk 50 Arsenic 50 PFCs 50 ozone depletion 50 Perchlorate 50 residues 50 carcinogenic chemicals 50 toxins 50 contamination 50 mycotoxin 50 cyanuric acid 50 Concentrations 50 pollutants 50 sulphate 50 naturally occurring substance 50 exceedances 50 E.coli bacteria 49 rodenticides 49 petroleum hydrocarbons 49 PCB contamination 49 harmful contaminants 49 sulphates 49 perchlorethylene 49 insecticides 49 DDT 49 coliform 49 nitrosamines 49 cyanobacteria 49 aflatoxin 49 chloramine 49 alkalinity 49 hexavalent chromium 49 malachite green 49 cardiac toxicity 49 pollutant