Related by context. Frequent words. (Click for all words.) 72 discharging pollutants 71 dumping raw sewage 59 sewage discharges 55 untreated wastewater 55 effluent discharge 54 dumping 52 untreated sewage 52 stormwater discharge 51 discharging 51 wastewater discharges 51 polluting 51 wastewater discharge 50 contaminating groundwater 49 Raw sewage 49 sewage spills 49 sand quarrying 48 waterways 48 sanitary sewer overflows 47 sewage overflows 47 Clean Water Act 47 contaminating 47 unnamed tributary 46 wastewater effluent 46 sewage effluent 46 raw sewage 46 creeks rivers 46 dischargers 45 sediment runoff 45 Conemaugh River 45 watercourse 45 Bus plunges 45 heavily polluted 45 sewage 45 backflow 45 effluent 45 Creek tributary 45 Mahanadi river 45 indiscriminate dumping 45 wastewater 44 intermittent streams 44 discharges 44 fecal coliform bacteria 44 tributary 44 creeks streams 44 drunken boating 44 pollution 44 polluted runoff 44 Illegal dumping 44 ammonia nitrogen 43 pollute 43 stormwater pollution 43 Woman drowns 43 waterway 43 Songhua river 43 stormwater 43 Taihu Lake 43 Elimination System NPDES 43 polluted 43 combined sewer overflows 43 suspended solids 43 sewage overflow 43 dredging 43 Migratory Birds Convention 43 sewer overflows 42 Xijiang River 42 Elimination System 42 Ghaggar 42 overpumping 42 pumping 42 meth precursors 42 groundwater withdrawals 42 Underage drinkers 42 sewage lagoons 42 Boy drowns 42 Monocacy River 42 mussel species 42 intentionally wrecking 42 wastewater treatment 42 smuggling contraband 42 NPDES permit 42 discharging firearms 42 polluted waterways 42 Polluting 42 trespassing 42 unlawful trespass 42 Kaskaskia River 41 sewage disposal 41 APGI 41 dangerously polluted 41 breaching 41 Stormwater runoff 41 nutrient runoff 41 groundwater 41 Highly radioactive 41 rivers lakes 41 sewer hookups 41 silt 41 navigable rivers 41 impoundment 41 effluent disposal 41 dam spillway