ROI Unit backup return debris Gutters filters benefits reliance rooftops resources industries sanitation first step reservoirs irrigation investment Downspouts Water bills emergencies contaminants Distribution Water Demand parking lots cooling towers employee needs paved surfaces allegianceindia water shortages various purposes valuable practice additional expense Commercial centers 3 to 5-year period freshwater sources substantial amounts significant expense water usage savings Large storage tanks industrial settings production processes Resource Utilization Environmental Impact Large Catchment Areas Allegiance Enterprise Efficient utilization Emergency Preparedness larger catchment areas lower carbon footprint 80% direct cost savings high water requirements Reduced Carbon Footprint suitable catchment areas initial installation cost Rain Water Harvesing System Allegiance Water Management rainwater harvesting systems Industrial rainwater harvesting energy-intensive filtration pumps