In view of water problems faced by the city, the Delhi Jal Board (DJB) has, until now, given clearance to 30 structures that have water-harvesting systems and are, therefore, capable of water conservation.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/jal-board-green-signal-30-structures-water-harvesting-facilities
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-jal-board-djb
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-water-harvesting
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-harvesting
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-urban-development
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wastewater-recycling
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-management
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/high-court
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-development-authority-dda
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toilets