Related by context. Frequent words. (Click for all words.) 58 rotenone 52 phosphorus 52 biocide 51 phosphorous 50 chlorine bleach 50 herbicide 49 insecticide 49 chloride 49 chlorine 49 chlorides 48 malathion 48 sodium bicarbonate 48 activated charcoal 48 salts 48 water soluble 48 chloramine 48 cyanide 48 sulphate 47 solvents 47 naturally occurring bacteria 47 effluent 47 organic solvents 47 larvicide 47 toxin 47 fungicide 46 hydrilla 46 dissolved solids 46 formalin 46 ammonium 46 treated effluent 46 chlorine dioxide 45 calcium chloride 45 sodium hydroxide 45 nontoxic 45 pigments 45 chemicals 45 sodium hypochlorite 45 brine 45 strychnine 45 alkali 45 sodium chloride 44 insecticides 44 leaching 44 herbicides 44 algae 44 paraquat 44 isopropyl alcohol 44 suspected carcinogen 44 Anhydrous ammonia 44 permethrin 44 vinegar 44 fumigants 44 sulfuric acid 44 nitric acid 43 nitrogen fertilizer 43 fungicides 43 pesticide 43 salt brine 43 granulation 43 beet juice 43 bleach 43 compost 43 hydrochloric acid 43 nitrate 43 rat poison 43 lye 43 nitrogen 43 weed killer 43 ivermectin 43 toxic pesticides 43 duckweed 43 iodide 43 lawn fertilizers 43 dissolved oxygen 42 chemically treated 42 alkalinity 42 arsenic 42 bicarbonate 42 total dissolved solids 42 milfoil 42 weedkiller 42 pesticides 42 gelatine 42 hydrofluoric acid 42 hydrogen peroxide 42 poisonous substance 42 liquid manure 42 suspended solids 42 muriatic acid 42 aerators 42 fertilizer 42 ammonia 41 apple cider vinegar 41 salicylic acid 41 oxidizes 41 poisons 41 allicin 41 spider mites 41 active ingredient 41 chlorpyrifos 41 sprays