Punjab government has accorded approval to the project for purifying all the sullage nullahs (drains) including Hadayara Drain in Lahore.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/project-purifying-all-sullage-nullahs-approved
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/pakistan-observer
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-asia
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-policy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ravi
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rivers
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lahore
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment