NGT had earlier constituted a committee and asked the Delhi Jal Board to submit report on discharge from each drain that joins Yamuna.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/delhi-jal-board-will-not-spend-single-penny-yamuna-without-our-nod-ngt
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/asian-age-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-jal-board-djb
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/national-green-trbunal-ngt
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yamuna
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-pollution-control-committee
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution