Related by context. Frequent words. (Click for all words.) 55 untreated wastewater 50 sewage discharges 49 effluent discharge 49 wastewater discharges 48 sediment runoff 48 discharges 48 discharging 47 wastewater discharge 47 contaminating groundwater 46 dumping 45 sewer overflows 45 sewage 44 effluent 44 unnamed tributary 44 contaminating 44 untreated sewage 44 contaminated 44 Raw sewage 44 wastewater 44 effluents 44 sewage spills 44 harmful contaminants 43 fecal coliform bacteria 43 raw sewage 43 industrial effluents 43 improperly disposing 43 Effluent 43 sludge 42 improperly disposed 42 fecal coliform 42 Creek tributary 42 tributary 42 ash ponds 41 suspended solids 41 polluted groundwater 41 sewage overflows 41 creeks rivers 41 wastewater treatment 41 sewage sludge 41 Illegal dumping 41 methylene chloride 40 Contaminated 40 rodent droppings 40 livestock manure 40 sewage overflow 40 headworks 40 fecal bacteria 40 hazardous waste disposal 40 creeks streams 40 discharge 39 contamination 39 grease traps 39 hazardous waste 39 turbidity 39 carcinogenic chemicals 39 noxious odors 39 dischargers 39 contaminants 39 drains 39 contaminant 39 toxic waste 39 furans 39 polluted runoff 39 polluting 39 cat feces 39 Polluted 39 suspected carcinogen 39 chicken manure 39 sanitary sewage 39 Wastewater Treatment Facility 39 ponds 39 liquid manure 39 Hydrochloric acid 38 Sulfate 38 polluted 38 watercourse 38 garbage disposal 38 animal droppings 38 Waste Water 38 PCBs 38 contaminate drinking 38 fly ash 38 leachate 38 human excreta 38 Sanitary Landfill 38 combined sewer overflows 38 backflow 38 contaminates 38 silt 38 sewage treatment 38 overflows 38 mouse droppings 38 pollutants 38 sediment 38 Polluting 38 waste disposal 38 excretes 38 freshwater mussels 38 Sewage 38 toxic algae blooms 37 toxic chemicals