Related by context. Frequent words. (Click for all words.) 73 fluoride 68 Fluoride 61 chloramine 60 fluoridated water 57 fluoridated 57 fluoridation 55 fluoridating 55 Fluoridation 55 fluoridate 55 iodide 53 chlorination 53 arsenic 53 chlorine 53 prevent tooth decay 52 tooth decay 51 dental decay 51 activated charcoal 51 sulphate 51 Nitrates 51 chlorinated 51 suspected carcinogen 49 water 49 potable 48 Nitrate 48 sodium hypochlorite 48 chromium 48 nitrate 48 isopropyl alcohol 48 perchlorate 47 iodine 47 sodium chloride 47 fluoride toothpaste 47 chlorine tablets 47 nitrates 46 harmful chemicals 46 sulfate 46 drinking 46 chlorinate 46 sodium bicarbonate 46 sorbitol 46 fluorosis 46 trihalomethanes 46 bicarbonate 46 softener 46 chlorine bleach 46 contaminate groundwater 46 Drano 46 amalgam fillings 46 bottled water 46 toxic chemicals 46 barium 46 Arsenic 45 water softeners 45 Epsom salts 45 radium 45 mouthwash 45 manganese 45 mercury 45 chlorides 45 sodium benzoate 45 mg l 45 dissolved solids 45 groundwater 45 hydrofluoric acid 45 dental caries 45 Sodium 45 reverse osmosis 45 hexavalent chromium 44 total dissolved solids 44 Perchlorate 44 malathion 44 treated effluent 44 Drinking Water 44 Polluted 44 mercury fillings 44 potable water 44 ascorbic acid 44 water softener 44 citrate 44 alkali 44 hydrochloric acid 43 chloride 43 wastewater 43 Xylitol 43 contaminant 43 sewage 43 ammonia 43 Drinking 43 household bleach 43 underground aquifers 43 dishwashing detergent 43 fly ash 43 salts 43 preservative 43 squalene 43 Chlorine 43 gargle 43 phosphorus 43 endocrine disruptors 43 copper sulfate 43 toxins