dew fog tank nets world Kenya roofs years runoff cistern cooking laundry toilets aquifer schools example flooding practice surfaces deep pit Australia hospitals thousands reservoir Rain water Collection urban areas other tools institutions Domestic Use Applications storage system green rooftops drinking water allegianceindia catchment areas various regions Excess rainwater different scales various purposes household chores Urban Agriculture precious resource sustainable method sustainable cities groundwater levels entire communities longer-term storage Groundwater Recharge Rainwater harvesting rainwater catchments individual households building temperatures small-scale irrigation More Details Contac Us Allegiance Water Management sustainable water management United Nations Sustainable Development Goals