An estimated 10 million gallons of raw sewage flows directly into Rawal Dam every day.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/rawal-dam-%E2%80%93-more-polluted-ever
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/dawn-pakistan
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dams
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rawal
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lakes
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fauna
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystems
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/supreme-court
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage-treatment-plants-stp
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water