Related by context. Frequent words. (Click for all words.) 64 dissolved solids 63 contaminants 62 disinfection byproducts 60 carbon tetrachloride 60 concentrations 60 Hydrogen sulfide 60 total dissolved solids 60 groundwater 59 chlorides 59 trichlorethylene TCE 59 harmful contaminants 57 nitrates 57 arsenic mercury 57 aquifers 57 Floridan Aquifer 56 naturally occurring radioactive 56 arsenic 56 contaminant 56 picocuries 56 nitrate 56 contaminating groundwater 56 iron manganese 55 polluted groundwater 55 suspected carcinogen 55 chlorinated solvents 55 fecal coliform bacteria 55 radionuclides 55 maximum contaminant 55 chlordane 55 tetrachlorethylene 55 radioactive contaminants 55 soils 54 chloramines 54 leachable 54 E coli bacteria 54 evaporation ponds 54 turbidity 54 brines 54 deplete oxygen 54 sediment 54 chloramine 54 underground aquifers 54 aquifer 54 water 54 radium 54 coliforms 54 dissolved oxygen levels 53 dieldrin 53 sludges 53 sulphates 53 surficial 53 treated effluent 53 Algae blooms 53 mg l 53 trihalomethanes 53 sulphide minerals 53 reservoirs 53 toxicants 53 fecal coliform 53 iron oxides 53 mineral salts 53 wellfield 53 chlorine 53 sulfate 52 pollutants 52 sediments 52 radioiodine 52 contaminate groundwater 52 dischargers 52 turbid 52 Concentrations 52 flouride 52 radionuclide 52 enterococcus 52 Sediments 52 creeks streams 52 dissolved oxygen 52 glacial till 51 sulphate 51 inorganic arsenic 51 Sulfur dioxide 51 phosphorus 51 polychlorinated biphenyls PCBs 51 neutral pH 51 manganese 51 analyte 51 reservoir 51 dewatered 51 marine sediments 51 trace amounts 51 fecal bacteria 51 arsenic contamination 51 underground aquifer 51 Nitrates 51 tritium 51 tailwaters 51 Rotenone 51 trichlorethylene 51 brine 51 contaminated groundwater 50 nitrobenzene