Unit Pure roads India Impact Methods filters details The NWM flooding Benefits drinking rooftops Reduction Dug wells irrigation rural areas other needs roundabouts potable water citizen action other surfaces surface runoff catchment areas various purposes Rooftop Catchment Dug Well Recharge essential practice water conservation Groundwater Recharge sustainable approach Historical Traditions Allegiance Enterprise Rain Water Harvesting equitable distribution National Water Mission rich cultural tradition major rural water source Long-Term Sustainability water scarcity challenges bacteriological-free water Allegiance Water Management Rainwater Harvesting Matters