Related by context. Frequent words. (Click for all words.) 63 fecal coliform bacteria 62 fecal coliform 61 turbidity 61 trihalomethanes 60 total dissolved solids 59 ppb 59 mg l 58 contaminant 58 arsenic 57 contaminants 57 coliform 57 benzene 56 coliform bacteria 56 groundwater 56 perchlorate 56 fecal bacteria 55 tritium 55 nitrate 54 suspected carcinogen 54 chlorides 53 hexavalent chromium 53 Ambient Air 53 chloramine 53 enterococci 53 trichlorethylene 53 dissolved oxygen levels 53 VOC emissions 52 pollutant 51 ozone concentrations 51 dissolved oxygen 51 PCBs 51 phosphorus 51 PFOS 51 THM 51 chromium 50 alkalinity 50 Nitrates 50 chlorine 50 radium 50 polychlorinated biphenyls PCBs 50 pesticide residue 50 phosphorous 50 air toxics 50 groundwater contamination 50 methyl mercury 50 mercury 50 chloride 50 USEPA 50 Nitrate 50 fecal contamination 50 suspended solids 50 wastewater discharge 50 nitrates 50 effluent 49 chlorination 49 dioxin 49 Water Quality 49 SO2 49 microgram 49 DEQ 49 wastewater discharges 49 picocuries per 49 iodide 49 ozone 49 dioxins 49 sediment 49 hydrogen sulfide 49 hazardous substances 49 Environmental Quality DEQ 48 vinyl chloride 48 PCB contamination 48 PFCs 48 #,# dioxane 48 selenium 48 fine particulate matter 48 contamination 48 pollutants 48 radioactive cesium 48 arsenic contamination 48 fine particle pollution 48 sulfate 48 volatile organic compounds 48 Sulfur dioxide 48 radionuclides 48 TCE 48 furans 48 ppm 48 ATSDR 48 MDEQ 48 perchlorethylene 48 hexane 47 pesticide residues 47 Safe Drinking Water 47 particulate matter PM 47 OEPA 47 leachate 47 particulate 47 EPA 47 Tritium 47 TDEC 47 acrylamide