New Delhi, June 25: With India littering its waste without sufficient treatment, it needs to set aside about 88 sq. km of precious land — the size of New Delhi — for landfills by 2050, industry association Assocham said on Sunday, citing its study. “Considering that most of the waste in India is dumped without treatment, it would require an estimated 88 square kilometre (sq km) of precious land to be brought under waste disposal through landfilling by 2050, which is equivalent to the size of area under administration of the New Delhi Municipal Council,” said a joint report of Assocham and accounting firm PwC.