Related by context. Frequent words. (Click for all words.) 60 perchlorate 54 perchlorate contamination 54 suspected carcinogen 53 bromate 53 contaminate groundwater 53 Perchlorate 52 contaminated 50 contaminant 50 potentially carcinogenic 49 carbon tetrachloride 49 harmful contaminants 49 #,# dioxane 49 Infant formula 49 tetrachlorethylene 49 fracking fluids 49 methamidophos 48 disinfection byproducts 48 chlordane 48 trichlorethylene TCE 48 contaminants 48 probable carcinogen 48 trichlorethylene 47 benzo pyrene 47 chlorine 47 chemicals 47 Hydrochloric acid 47 cleaning solvents 47 contaminate drinking 47 methylene chloride 47 toxic chemicals 47 chlorinated solvents 47 flame retardant chemicals 47 polycarbonate bottles 47 trace amounts 46 Hydrogen sulfide 46 PFOS 46 cyanuric acid 46 tritium 46 radioactive tritium 46 sodium dichromate 46 polybrominated diphenyl ethers 46 Toxic chemicals 46 carcinogen 46 arsenic 46 chlorpyrifos 46 carcinogenic chemicals 45 contaminating groundwater 45 potent neurotoxin 45 contamination 45 benzene 45 polluted groundwater 45 dieldrin 45 additive MTBE 45 toxic solvents 45 polychlorinated biphenyls PCBs 45 ammonia 44 hormone disrupting 44 Environment CSE 44 sodium nitrate 44 sodium benzoate 44 Acrylamide 44 furan 44 nitrates 44 americium 44 PBDE 44 toxic chemical melamine 44 spokeswoman Stephanie Kwisnek 44 toxic 44 caffeinated alcoholic drinks 44 lindane 44 Nitrogen oxides 44 Diesel exhaust 44 melamine contaminated 44 trihalomethanes 44 PCBs polychlorinated biphenyls 44 chemical 44 Baxter heparin 44 pesticides 44 toxic substances 44 harmful chemicals 43 E coli bacteria 43 fracking fluid 43 naturally occurring radioactive 43 organophosphate pesticides 43 harmful substances 43 listeria monocytogenes 43 chromium 43 polycyclic aromatic hydrocarbons PAHs 43 chlorinated 43 Environmental Protection Agency 43 White Rabbit Creamy 43 hazardous chemicals 43 Rat poison 43 Nitrates 43 ammonia nitrate 43 pesticide residue 43 Radioactive waste 43 perfluorooctanoic acid 43 chemical solvents 43 petroleum distillates 43 harmless nitrogen