Related by context. Frequent words. (Click for all words.) 56 fluorides 55 DBPs 53 THMs 53 harmful contaminants 53 hydroxyl radicals 52 harmful toxins 52 aromatic compounds 52 mimic estrogen 52 bacteria 52 electrolyzed water 52 engineered nanoparticles 51 carbonic acid 51 aromatic oils 51 ultraviolet UV light 51 Neu5Gc 51 UV filters 51 infectious prions 51 combustion gases 51 salts 51 photocatalyst 51 micro organisms 51 Cyanobacteria 51 toxins 50 seawater 50 microscopic cracks 50 mineral salts 50 Baking soda 50 Ultraviolet light 50 anaerobic bacteria 50 oxidising 50 organic acids 50 salt crystals 50 sulphates 50 Bacteria 49 bacterial spores 49 disinfection byproducts 49 corrosives 49 microorganisms 49 contaminants 49 Microorganisms 49 triclocarban 49 colorless liquid 49 peroxides 49 methyl mercury 49 atmospheric nitrogen 49 acidic foods 49 polycarbonate bottles 49 thyroid glands 48 naturally occurring bacteria 48 waxy substance 48 ultra violet rays 48 purines 48 silver ions 48 residues 48 acrolein 48 naturally occurring substance 48 toxic byproducts 48 fatty substances 48 chlorinated 48 bacterium 48 harmful microorganisms 48 microbes 48 damp sponge 48 bile acids 48 oxalic acid 48 C. difficile bacteria 48 E coli bacteria 48 organic solvents 48 oxidants 48 calcium sulfate 48 silver nitrate 48 Kuan Yin Taiwan 48 coliforms 47 hypochlorite 47 ascorbic acid 47 harmful pathogens 47 antibacterial properties 47 Cranberry juice 47 toxic solvents 47 dye molecules 47 micro organism 47 ionize 47 nanofibres 47 digestive juices 47 arsenate 47 endotoxins 47 solvents 47 soap scum 47 impurities 47 polycyclic aromatic hydrocarbons PAHs 47 chloramine 47 Hydrogen sulfide 47 pseudomonas 47 metal ions 47 oxidant 47 furan 47 microscopic organisms 47 vacuoles 47 infectious organisms 47 microscopic algae 47 suspected carcinogen