Hyderabad and Mumbai Landfills Rank Among World's Worst Methane Polluters in Global Study
A groundbreaking new study from the University of California, Los Angeles (UCLA) has identified two Indian landfills among the world's top 25 super-polluting methane emission sites. The research reveals that Hyderabad's Jawahar Nagar landfill and Mumbai's Kanjurmarg landfill are contributing significantly to global warming through massive methane releases detected from space.
Satellite Data Reveals Alarming Emission Rates
The UCLA STOP Methane Project analyzed satellite data from 2025 showing nearly 3,000 methane plumes from more than 700 waste facilities worldwide. From this comprehensive analysis, researchers identified 25 waste disposal sites across 18 countries with the highest methane emission rates, ranging from 3.6 to 7.6 tonnes of methane per hour.
To put these staggering numbers in perspective: A single source emitting just 5 tonnes of methane per hour (equivalent to 5,000 kilograms) contributes approximately as much to global warming as one million SUVs operating simultaneously. Methane is an exceptionally potent heat-trapping gas that is 86 times more damaging than carbon dioxide over a 20-year period and responsible for more than 45% of recent global warming.
Indian Landfills' Disturbing Rankings
The study places Hyderabad's Integrated Municipal Solid Waste Management Project at Jawahar Nagar landfill in a particularly troubling position. With emissions of 5.9 tonnes of methane per hour, this facility ranks fourth globally among the worst polluters. Meanwhile, Mumbai's Kanjurmarg landfill, emitting 4.9 tonnes per hour, occupies the twelfth position on this dubious list of environmental offenders.
The top position in the global ranking belongs to the Campo de Mayo landfill in Buenos Aires Province, Argentina, which emits a staggering 7.6 tonnes of methane per hour. The presence of multiple Indian sites among the world's worst methane polluters highlights significant challenges in waste management and environmental regulation.
Global Distribution of Super-Polluting Landfills
The UCLA research reveals that these highly polluting landfills are distributed across both developed and developing nations, representing countries at all income levels and from every region of the world. The geographical breakdown includes:
- Three sites each in Brazil and Chile
- Two sites each in India, Saudi Arabia, and Turkey
- One site each in Algeria, Argentina, Greece, Hong Kong, Indonesia, Iran, Israel, Kuwait, Malaysia, Mexico, the Philippines, Thailand, and the United States
This global distribution demonstrates that methane pollution from waste disposal is a universal problem affecting nations regardless of their economic development status or geographical location.
Potential for Action and Accountability
Juan Pablo Escudero, a project partner with UCLA's STOP Methane initiative and a professor at Universidad Adolfo Ibáñez School of Law in Santiago, Chile, emphasized the importance of making this data publicly available. "We have already seen how making reliable data available to larger audiences and increasing visibility can be an effective way of prompting action," he stated.
Escudero further explained that "This data provides great opportunities for responsible operators and national governments to lead the way on cleaning up their waste sectors." The comprehensive satellite monitoring and public reporting create unprecedented transparency that could drive meaningful environmental reforms and emission reductions at these critical waste facilities.
The UCLA STOP Methane Project represents a significant advancement in environmental monitoring, utilizing space-based technology to identify and quantify methane emissions with unprecedented accuracy. This research provides crucial evidence that can inform policy decisions, regulatory frameworks, and international climate agreements aimed at reducing methane emissions from waste management systems worldwide.
