Related by context. Frequent words. (Click for all words.) 48 Toxic fumes 48 polluting groundwater 48 chemically contaminated 48 contaminate drinking 47 contaminating groundwater 46 polluted groundwater 45 Toddler drowns 44 fracking fluids 44 contaminating 44 Toxic chemicals 44 contaminate groundwater 44 inhaling toxic 44 inhaling carbon monoxide 44 propane tank exploded 44 stinky mess 43 Flames engulfed 43 Hydrogen sulfide 43 MTBE contamination 43 polluting waterways 42 pig feces 42 Contaminated soil 42 nearby 42 shallow aquifer 42 overpowering smell 42 Propane tanks 42 putrid smell 42 Marcellus shale formation 42 Woman drowns 42 rotten egg smell 42 Boy drowns 42 fracking fluid 41 coal slurry 41 befouling 41 rotten egg odor 41 tritiated water 41 noxious fumes 41 Raw sewage 41 Highly radioactive 41 nitrate contamination 41 Daisetta 41 Septic tanks 41 chlorine leak 41 beaver pond 41 animal droppings 41 E coli bacteria 41 Peeks Creek 41 water 40 Dunkard Creek 40 arsenic laced 40 Union Carbide factory 40 manure piles 40 noxious odors 40 smoke billow 40 foul smelling 40 smelling smoke 40 Seepage 40 seepages 40 corrosive acid 40 contaminated groundwater 40 toxic fumes 40 Firefighters doused 40 polluted 40 Globs 40 fecal material 40 nauseating smell 40 groundwater contamination 40 toxic benzene 40 soiled beaches 40 odors emanating 40 pollute groundwater 40 Chesapeake Appalachia 40 unleashed gusher 39 seeping 39 Conemaugh River 39 Radium Springs 39 Decomposed body 39 poisonous carbon monoxide 39 wells 39 contaminated 39 Rat poison 39 toxic vapors 39 digging trench 39 creek 39 mud 39 overturned tractor trailer 39 smoky odor 39 Wissahickon Creek 39 hydrogen sulfide 38 pipe ruptured 38 oil sheens 38 hydro fracking 38 unpleasant smell 38 Teen drowns 38 ammonia fumes 38 MISSISSIPPI RIVER 38 Fire engulfs 38 smoky smell 38 rotting vegetation 38 noxious odor 38 Wangjialing Coal Mine 38 Marcellus shale drilling