Circular Water Economy: Delhi’s Mandate for Treated Wastewater in Urban Infrastructure

As Delhi grapples with chronic water scarcity and the rapid depletion of its groundwater table, the government has introduced the 'Reclaimed Water Policy, 2026'. This policy marks a significant shift in urban water governance by mandating the use of treated wastewater for non-potable activities, specifically targeting the construction sector and large-scale horticulture. With the capital generating approximately 750 million gallons of sewage daily, the policy seeks to transform this waste into a vital resource, thereby reducing the city's heavy reliance on fresh potable water. From a policy perspective, this initiative addresses the 'water-energy-food' nexus by curbing the extraction of groundwater, which is currently being depleted at an unsustainable rate to meet the demands of the booming construction industry. By institutionalizing the reuse of treated water, the government is moving toward a circular economy model. This not only mitigates the environmental impact of urban expansion but also reduces the burden on the city’s primary water supply infrastructure. The success of this policy will hinge on the efficacy of the existing Sewage Treatment Plants (STPs) and the development of a robust distribution network to transport treated water to construction sites and public parks.