90% of India's cities dump garbage in landfill sites which don't meet sanitary standards and at this rate by 2047, India will be generating 250-260 million tonnes of waste per year, according to Swati Singh Sambyal, Programme Manager, Environmental Governance (Municipal Solid Waste) from Centre for Science and Environment. This pace of garbage generation without segregation and scientific mechanism to dispose of waste and recycling is unsustainable in the long run, as India will need landfill the size of Mumbai, Hyderabad, Greater Noida combined by 2047.