Us Mob How Unit Cost Tanks plots sewers Experts Mail id furrows passages rainfall approach borewells Inter-Plot Many Types level land urban areas water bodies Ground water growing crops existing wells ground surface injection wells similar concept water resources allegianceindia effective method impermeable surfaces rooftop outlet pipes Allegiance Enterprise Surface Runoff Harvesting sloping areas supplements Micro Plot Water Harvesting excessive storm water runoff rooftop rainwater harvesting Surfaces Runoff Rain Water Harvesting System Allegiance Water Management Rainy Season Start Allegiance Water Management Runoff rainwater harvesting