Related by context. Frequent words. (Click for all words.) 64 contaminate drinking 61 polluting groundwater 61 contaminate groundwater 60 contaminating groundwater 58 pollute groundwater 58 frac'ing 57 polluted groundwater 57 suspected carcinogen 56 Hydrogen sulfide 56 trichloroethene 56 hydraulic fracturing fluids 56 pollute waterways 56 polluting waterways 55 Leachate 55 fibrous mineral 55 Edge Moor 55 Clean Streams Law 54 pentachlorophenol 54 Chlorinated 54 mercury sulfur dioxide 53 carcinogenic substance 53 toxic residues 53 unlined pits 53 chlorine disinfection 53 harmful contaminants 53 ferric chloride 53 hydro fracturing 53 contaminates 53 diarrhea cramps nausea 53 methylene chloride 53 biofiltration 52 toxic solvents 52 SDWA 52 Sulphuric acid 52 fracking fluid 52 sulfur trioxide 52 contaminate 52 respiratory irritant 52 hydrofracturing 52 nonradioactive 52 lung irritant 52 brackish groundwater 52 Kuan Yin Taiwan 52 Diesel exhaust 52 coal ash impoundments 51 fracking fluids 51 naturally occurring mineral 51 niobium oxides vanadium 51 crystalline silica 51 haloacetic acids 51 Contaminated soil 51 Thoroughly cooking 51 Hydrochloric acid 51 scatter radioactive 51 mold fungi 51 radioactively contaminated 51 fracturing fluids 51 contaminated 51 Sulfuric acid 51 Reverse osmosis 51 contaminating 50 groundwater plume 50 Contaminant 50 coalbed 50 potassium permanganate 50 arsenic mercury 50 Radioactive waste 50 colorless odorless tasteless 50 turbid water 50 deplete oxygen 50 perfluorooctanoic acid PFOA 50 mercury emitted 50 Sulphur dioxide 50 PCBs polychlorinated biphenyls 50 specialty waxes 50 powerful neurotoxin 50 Trichloroethylene 49 MTBE contamination 49 Septic tanks 49 carbon disulfide 49 TFN NEWS BRIEFING Pharmaceuticals 49 biodegraded 49 petroleum distillates 49 vapor extraction 49 tritiated water 49 chromium contamination 49 toxic pollutant 49 nitrogen oxide sulfur dioxide 49 soft whitish 49 Anhydrous 49 Amy Hartsock 49 Slurry 49 coal slurry 49 carcinogenic chemicals 49 elemental sulfur 49 reproductive toxins 49 chlorinated solvents 49 remove impurities 49 anhydrous ammonia fertilizer 49 airborne particulates 49 chemical solvents