Related by context. Frequent words. (Click for all words.) 59 catchments 59 groundwater 59 catchment 58 aquifers 57 effluent 57 irrigated agriculture 57 effluent discharge 57 treated effluent 56 megalitres 56 megalitre 56 aquifer recharge 56 aquifer 56 gigalitres 54 water 54 groundwater basin 53 stormwater drains 53 salinity 53 watercourse 53 underground aquifers 53 Salinity 52 Effluent 52 cumecs 52 evaporation ponds 51 groundwater recharge 51 Catchment 51 wastewater 51 Wivenhoe Dam 51 freshwater 51 desalinated 50 sewerage 50 irrigation 50 reservoirs 50 groundwater pumping 50 underground aquifer 50 total dissolved solids 50 Murrumbidgee 50 sewage discharges 50 sediment 50 headworks 50 Murray Darling Basin 50 Angat Dam 49 reticulation 49 Groundwater 49 irrigators 49 dissolved solids 49 desalinated water 49 desal 49 outfalls 49 greywater 49 sedimentation 49 dewatered 49 Nitrates 49 irrigator 49 reservoir 49 chlorination 48 outfall 48 Environment Waikato 48 turbidity 48 rainwater tanks 48 mgd 48 Hydro Tasmania 48 siltation 48 Campaspe 48 wellfield 48 saltwater intrusion 48 sewage 48 Lake Wendouree 48 dissolved oxygen levels 48 stormwater 48 industrial effluents 48 Floridan Aquifer 47 Murray Darling 47 dischargers 47 NamWater 47 watersheds 47 waterbody 47 catchment areas 47 nutrient runoff 47 silting 47 potable 47 hydrogeological 47 desalination plant 47 faecal 47 Fitzroy River 47 SEQ 47 tailings dam 47 aquatic ecosystem 47 storages 47 Coorong 47 wastewater treatment 46 Metrowater 46 sewage treatment 46 drainage basins 46 Waitaki River 46 dewatering 46 Treatment Plant 46 Vaal River 46 algal bloom 46 desalination plants 46 desal plant 46 irrigated crops