Related by context. Frequent words. (Click for all words.) 57 water 55 bacteriological 55 potable 54 THMs 54 chlorination 54 total coliform 53 coliforms 53 harmful contaminants 52 potable drinking 52 contaminants 52 groundwater 52 total dissolved solids 51 industrial effluents 51 microbiological 51 Potable water 50 Turbidity 50 potable water 50 shallow aquifer 50 turbidity 50 disinfection byproducts 50 effluent discharge 50 disinfection 50 sewage effluent 50 harmful microorganisms 49 microbial contamination 49 E coli bacteria 49 mg l 49 chlorine tablets 49 chlorinated 49 dissolved solids 49 feedwater 48 ultraviolet disinfection 48 fecal coliform 48 groundwater aquifers 48 backflow 48 legionella 48 alkalinity 48 effluent 48 sanitary 48 contaminant 48 groundwater extraction 48 tapwater 48 KSPCB 48 Drinking Water 48 chlorinating 48 iron manganese 48 coliform 48 Microbiological 47 Legionella bacteria 47 flouride 47 fecal coliform bacteria 47 chlorine 47 chlorinate 47 ozonation 47 autoclaving 47 exceedance 47 drinkable water 47 wastewaters 47 harmful pathogens 47 hygienic 47 desalinated 47 bleaching powder 47 Disinfection 46 Sonia Vihar 46 PPCB 46 desilted 46 cleanliness 46 ultrapure water 46 dissolved oxygen 46 Jal Sansthan 46 bacterial contamination 46 wastewater 46 UV disinfection 46 pasteurisation 46 faecal 46 GPCB 46 seawater 46 maximum contaminant 45 chemical residues 45 Kuan Yin Taiwan 45 pathogenic organisms 45 chloramines 45 contamination 45 groundwater recharge 45 inorganic arsenic 45 Thoroughly cooking 45 demineralization 45 chloramine 45 dissolved oxygen levels 45 dewatered 45 Angat Dam 45 drinkable 45 corrosives 45 effluents 45 nitrobenzene 44 arsenic 44 outfalls 44 coliform bacteria 44 membrane filtration 44 hydrogeological 44 GWCL