Related by context. Frequent words. (Click for all words.) 72 fecal coliform bacteria 72 enterococcus 71 fecal coliform 71 Coliform bacteria 69 coliforms 68 fecal bacteria 68 total coliform 66 Turbidity 66 E coli bacteria 66 tetrachlorethylene 66 THMs 65 enterococci 65 coliform 64 arsenic concentrations 64 Hydrogen sulfide 64 coliform bacteria 64 PCBs polychlorinated biphenyls 62 chlordane 62 inorganic arsenic 62 fecal contamination 62 contaminant 62 methyl mercury 61 benzo pyrene 61 picocuries 61 contaminants 61 total dissolved solids 60 coli 60 polychlorinated biphenyls PCBs 60 disinfection byproducts 60 suspected carcinogen 60 dissolved oxygen levels 60 carbon tetrachloride 60 mg l 59 exceedance 59 turbidity 59 dieldrin 58 dissolved solids 58 Stormwater runoff 58 arsenic mercury 58 Algae blooms 58 dissolved oxygen 57 pCi L 57 exceedances 57 detectible 57 nitrobenzene 57 e coli 57 trihalomethanes 56 acrolein 56 nitrates 56 deplete oxygen 56 infectious prions 56 sewage effluent 56 naturally occurring radioactive 56 maximum contaminant 56 Contaminants 56 arsenic 56 leachable 56 polybrominated diphenyl ethers 56 nitrate 56 bromate 56 domoic acid 56 bioaccumulate 55 polycyclic aromatic hydrocarbons PAHs 55 harmful contaminants 55 Sulfur dioxide 55 trichlorethylene TCE 55 acute toxicity 55 Sulfate 55 suspended solids 55 chlorinated solvents 55 shallow aquifer 55 benzene toluene 55 pollutant 55 Dioxins 55 Hydrochloric acid 55 Nitrogen oxides 54 Toxic chemicals 54 E. coli 54 Elevated levels 54 bacterial contamination 54 E.coli bacteria 54 Nitrates 54 Aflatoxin 54 serum calcium 54 Contaminant 54 endocrine disruptor 54 chlorides 54 Cyanobacteria 54 ppb 54 chloride 54 odorless colorless gas 54 Cryptosporidium 54 toxic algae bloom 54 furans 54 Legionella bacteria 54 contaminated 54 potent neurotoxin 54 methylene chloride 54 iron manganese 54 pollutants 54 bioaccumulation