Related by context. Frequent words. (Click for all words.) 59 naturally occurring mineral 57 suspected carcinogen 57 ammonium chloride 56 paraben 56 toxic residues 55 tannic acid 55 Sulfuric acid 55 corrosives 55 nitrogenous 54 artificial flavorings 54 oxidizing agent 54 aromatic hydrocarbons 54 TFN NEWS BRIEFING Pharmaceuticals 54 colorless liquid 54 colorless odorless tasteless 54 carcinogenic substances 54 Lactic acid 54 sludges 53 clog pores 53 fracturing fluids 53 methane ethane 53 Pungent 53 elemental sulfur 53 Hydrochloric acid 53 Contaminated soil 53 polycyclic aromatic hydrocarbons PAHs 52 glycols 52 Hexavalent chromium 52 BTEX 52 nitric 52 chemical solvents 52 benzene toluene 52 Xylene 52 toxic solvents 52 highly combustible methane 52 hydro carbons 52 xylenes 52 odorless tasteless 52 oxidising 52 benzoic acid 51 resinous 51 carcinogenic chemicals 51 Sulfur dioxide 51 coal tar 51 PCBs polychlorinated biphenyls 51 chemicals 51 peroxides 51 oxidise 51 Phenol 51 bioaccumulation 51 purines 51 Saccharin 51 fracking fluid 51 Titanium dioxide 51 Edge Moor 51 sodium nitrate 51 Paraquat 51 specialty waxes 51 soy lecithin 50 synthetic fragrances 50 contaminating groundwater 50 naturally occuring 50 polluting groundwater 50 contaminate groundwater 50 castor bean plant 50 arsenic mercury 50 oily liquid 50 stearic acid 50 artificial flavoring 50 petroleum distillates 50 wood preservatives 50 aromatic compounds 50 saltpeter 50 carbon tetrachloride 50 sodium sulfate 50 jojoba oil 50 mimic estrogen 50 inorganic chemicals 50 potassium hydroxide 50 sulphates 50 biodegraded 50 additives 50 toxic byproducts 50 Residues 50 Acrylamide 50 polycyclic aromatic hydrocarbons 50 Sulfate 50 byproducts 50 lubricant additives 50 mold fungi 50 Trichloroethylene 50 fluorides 50 incomplete combustion 50 sulfa 50 potassium magnesium 50 Caustic soda 50 Hydrogen peroxide 50 naturally occurring substance 50 radioactively contaminated 50 Acidic 49 limonene