Madhya Pradesh is home to second largest number of manual scavengers in the country with about 23,000 people still making a living out of it according to census data of 2011 released recently.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/mp-home-2nd-highest-manual-scavengers
[2] http://admin.indiaenvironmentportal.org.in/category/author/amarjeet-singh
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-bhopal
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/madhya-pradesh
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scavengers
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/census-2011
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ngo
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bihar
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rehabilitation
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttar-pradesh
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation