Delhi International Airport Limited (DIAL) Achieves Water-Positive Status as India's First Airport with Over 40 Million Passengers

Key facts

• Delhi International Airport Limited (DIAL) certified as water-positive, the first airport in India with over 40 million passengers.
• A water-positive facility replenishes more water than it consumes.
• Achieved through 625 rainwater harvesting structures installed across the airport.
• Two newly built underground reservoirs with a combined capacity of 9 million litres.
• 16.6 MLD zero-liquid-discharge sewage treatment plant recycles wastewater.
• Treated water reused for HVAC systems, landscape irrigation, toilet flushing and other non-potable applications.
• Water treatment plant provides high-quality potable water to passengers with minimal wastage.
• Advanced systems such as sprinklers and drip irrigation ensure efficient water use.
• Recognised for scope I water neutrality under the NITI Aayog–CII water neutrality framework.
• Water neutrality balances total freshwater use with water savings from improved efficiency, reuse and replenishment.