Related by context. Frequent words. (Click for all words.) 59 suspected carcinogen 59 carcinogenic chemicals 57 tetrachlorethylene 57 polychlorinated biphenyls PCBs 56 carbon tetrachloride 56 trichlorethylene TCE 55 PCBs polychlorinated biphenyls 53 trichlorethylene 53 chlorinated solvents 53 Hydrogen sulfide 53 perchlorethylene 52 naturally occurring substance 51 methylene chloride 50 carcinogenic substances 50 mercury arsenic 50 harmful contaminants 50 solvents 50 chlordane 49 oxalic acid 49 colorless liquid 49 degreasers 49 arsenic mercury 49 naphthalene 49 dieldrin 49 hexavalent chromium 49 methyl mercury 48 polybrominated diphenyl ethers 48 arsenic 48 polycyclic aromatic hydrocarbons 48 disinfection byproducts 48 toxins 48 contaminant 48 chemicals 48 cleaning solvents 48 oxalate 48 Hydrochloric acid 48 chlorides 48 hydrofluoric acid 48 chromium 48 vinyl chloride 47 volatile organic compounds 47 ethyl acetate 47 sludges 47 americium 47 neurotoxin 47 toxic chemicals 47 Dioxins 47 Triclosan 47 contaminants 47 Residues 47 Quercetin 47 organic solvents 47 organic acids 47 noxious chemicals 47 organophosphate 47 #,# dioxane 47 degreaser 47 Sulfur dioxide 47 polycyclic aromatic hydrocarbons PAHs 47 iron manganese 47 alkyl 46 sulfuric 46 naturally occurring bacteria 46 oestrogens 46 gamma tocopherol 46 elemental mercury 46 poisonous chemicals 46 toxin 46 phosgene 46 dioxin 46 Rotenone 46 Dioxin 46 Neu5Gc 46 Toluene 46 polychlorinated biphenyls 46 catechin 46 dioxins 46 acrolein 46 carcinogens 46 flame retardant chemicals 46 bile acids 46 nitrous oxides 46 Methyl 46 selenium 45 carcinogen 45 nitrite 45 nitrate 45 phytoestrogens 45 endocrine disruptor 45 petroleum distillates 45 endotoxins 45 potassium permanganate 45 harmful chemicals 45 Acrylamide 45 furan 45 thinners 45 ellagic acid 45 degreasing 45 airborne toxins 45 inorganic arsenic 45 organophosphates