Related by context. Frequent words. (Click for all words.) 71 Coliform 68 Enterococcus 66 enterococcus 63 coliforms 62 Turbidity 62 haloacetic acids 61 Coliform bacteria 61 residual chlorine 61 e coli bacteria 60 fecal coliform bacteria 60 total coliform 60 μg L 60 Chlorinated 59 enterococci 59 Clostridium perfringens 59 microcystin 59 Contaminant 58 fecal bacteria 58 Hydrogen sulfide 58 E coli bacteria 58 Aflatoxin 58 pseudomonas 58 fecal coliform 57 THMs 57 Escherichia coli E. coli 57 organochlorines 57 Microbiological 57 Intakes 57 arsenic concentrations 56 Leachate 56 Sedimentation 56 benzo pyrene 56 inorganic arsenic 56 Methylmercury 55 mg l 55 E. Coli 54 Disinfectants 54 carbon tetrachloride 54 coliform 54 Drug Resistant 54 picocuries 54 Enterobacteriaceae 54 Pollutant 54 coli 54 Bacillus cereus 54 ammonia nitrogen 53 Bioavailability 53 faecal contamination 53 Aspergillus 53 bacteriological 53 Disinfection 53 wastewater effluent 53 Byproduct 53 E.Coli 53 Streptococcus pyogenes 52 PFBA 52 Inactivation 52 Particulate Matter 52 vomitoxin 52 methicillin resistant S. aureus 52 Klebsiella pneumoniae 52 Vibrio cholerae 52 macroinvertebrates 52 Salmonella Typhimurium 52 total dissolved solids 52 tetrachlorethylene 52 aspergillus 52 Toxicological 52 Pretreatment 52 NSF ANSI Standard 51 antibiotic residues 51 Serratia marcescens 51 acute toxicity 51 E.coli bacteria 51 vibrio 51 Campylobacter jejuni 51 organochlorine pesticides 51 Nitrates 51 fecal contamination 51 Fecal 51 triclocarban 51 nitrobenzene 51 DBPs 51 Isolates 51 chlordane 51 coliform bacteria 51 Homocysteine 51 Stachybotrys 51 alkalinity 51 nitrification 51 Cryptosporidium 51 E Coli 51 dissolved oxygen levels 50 Disinfecting 50 S aureus 50 pathogenic strain 50 turbidity 50 maximum contaminant 50 benzene toluene 50 Vibrio 50 E. coli