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Indira Gandhi International Airport Becomes the Country’s First Water-Positive Airport
Introduction
- Big Achievement: IGI Airport in New Delhi has become India’s first airport to be called water-positive.
- More Water Added: This means the airport now puts more water back into the ground than the water it uses every year.
- Green Effort: This step supports India’s aim to build places that are safe for the environment and ready for future climate problems.
What is a Water-Positive Airport?
- Simple Meaning: Water-positive means an organisation gives back extra water to nature instead of only using it.
- Checking Process: This status is given after proper checking and measuring under NITI Aayog and CII rules.
- Complete Approach: It includes saving water, cleaning used water, storing rainwater, and helping water go back into the ground.
Key Initiatives That Enabled IGI’s Water-Positive Status
- Rain Harvesting: The airport has built 625+ rainwater harvesting systems to collect rainwater.
- Big Reservoirs: Two underground tanks can store about 9 million litres of water for different uses.
- No Wastewater: A 6 MLD STP plant cleans all used water so it can be reused for cooling, toilets, and gardening.
- Smart Checking: The airport uses leak-detecting tools and regular checks to stop water wastage.
- Saving Fixtures: Low-flow taps and water-saving devices help reduce daily water use.
- Better Gardening: The airport uses drip irrigation and plants that need less water.
- Ground Recharge: The airport also works on projects outside its boundary to refill groundwater.
Recognition and Validation
- National Award: IGI was honoured at the Water Innovation Summit 2025 for this achievement.
- Official Rules: The airport completed checks under the NITI Aayog–CII water programme.
- Industry Support: Reports by DIAL and GMR and third-party checks support the water-positive claim.
- First in Category: It is the first Indian airport handling over 40 million passengers to earn this status.
Environmental and Operational Impact
- Groundwater Help: Delhi already has low groundwater, and this achievement helps reduce pressure on it.
- Better for Climate: Extra stored and saved water helps the airport continue working even during shortages or dry seasons.
- Smooth Operations: Having its own water systems makes airport work more stable and reliable.
- Useful Reuse: Using treated wastewater reduces the need for fresh tap water.
- Cleaner Environment: The effort helps improve soil wetness and water quality around the area.
- Model for Others: This method can help other airports and big buildings follow the same path.
Quick Facts
- Airport Name: Indira Gandhi International Airport run by DIAL/GMR.
- Harvesting Units: More than 625 rainwater units
- Water Storage: Can store around 9 million litres
- Treatment Power: A 6 MLD plant cleans all wastewater for reuse.
- Passenger Level: First big Indian airport in its group to be water-positive.
- Recognition Year: Fully recognised in 2025.
Caveats and Future Directions
- Regular Checks: The airport must keep doing yearly tests to stay water-positive.
- System Care: Rainwater systems and the STP must be properly cleaned and maintained.
- Clear Reports: More detailed reports will help people trust the results even more.
- Bigger Projects: The airport plans to expand groundwater recharge projects outside its area.
- New Technology: In the future, tools like AI-based water control may be used.
- Teaching Others: IGI can guide other airports to become water-positive
Important Questions
- What does it mean for an airport to become water-positive?
- How did IGI Airport use rainwater harvesting to reduce water usage?
- What role does the 16.6 MLD sewage treatment plant play at IGI Airport?
- Why is IGI Airport’s water-positive status important for Delhi’s groundwater situation?
- What future steps are needed for IGI Airport to maintain its water-positive status?
Conclusion
IGI Airport becoming India’s first water-positive airport is a major step toward protecting the environment. By collecting rainwater, reusing treated water, preventing wastage, and helping refill groundwater, the airport now returns more water to nature than it uses. This achievement supports Delhi’s water needs, strengthens the airport’s future readiness, and sets an example for other airports and big organisations to follow.
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