Delhi Uses Legacy Waste for Waterlogged Land Reclamation

Delhi has used processed legacy waste from the Bhalswa landfill to fill low-lying waterlogged areas in Roop Vihar and Sharma Colony in North-West Delhi. The work is linked to landfill remediation, land reclamation, and drainage management in the National Capital Territory of Delhi.

Legacy Waste and Biomining

Legacy waste refers to old municipal solid waste accumulated at landfill sites over several years. Biomining is a scientific process that segregates, processes, and recovers material from old waste dumps for reuse or disposal. Delhi authorities have processed between 25,000 and 30,000 metric tonnes of waste daily as of May 2026.

Landfill Remediation in Delhi

Delhi has three major landfill sites at Bhalswa, Okhla, and Ghazipur. The Municipal Corporation of Delhi has set deadlines to eliminate Okhla and Bhalswa by 2026 and Ghazipur by 2027. Around 195 lakh metric tonnes of waste had been cleared by May 2026, and about 75 acres of land had been reclaimed through these operations.

Drainage and Public Welfare Projects

Delhi unveiled a Drainage Master Plan in September 2025 with an estimated cost of over ₹57,000 crore. The plan is designed for a 30-year drainage framework for Delhi. In July 2025, one-third of the reclaimed land from the three major landfill sites was earmarked for public welfare projects such as hospitals, schools, and sports complexes.

Important Facts for Exams

• Bhalswa landfill is one of Delhi’s three major landfill sites, along with Okhla and Ghazipur.
• Biomining capacity at Delhi’s landfill sites rose to nearly 35,000 metric tonnes per day by December 2025.
• The Delhi Economic Survey 2025-26 recorded 74.11 lakh metric tonnes of legacy waste remediated from April 2025 to February 2026.
• Processed legacy waste can be used for landfilling low-lying areas after scientific treatment and segregation.

Waste Management Targets

Delhi authorities have linked landfill clearance with the creation of public infrastructure and advanced waste processing facilities. Fresh waste dumping at landfill sites continues to affect the pace of remediation in Delhi.