At present, Delhi has four landfill sites and three of them operate beyond capacity.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/half-height-qutub-minar-meet-delhi%E2%80%99s-garbage-high-rises
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/landfill
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/garbage
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/municipal-corporations
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste