The Hindu notions of purity and pollution, inextricably linked with the caste system and the practice of untouchability, underlie the unsanitary practices in Indian society. These beliefs perpetuate the oppression of the “polluted castes,” who are forced to undertake manual scavenging, unclog manholes and clean other people’s filth. The availability of cheap Dalit labour to do these dehumanising jobs can be cited as one of the reasons why development of toilet facilities and a modern garbage and sewage management system have been neglected so far. As long as the Swachh Bharat Abhiyan attempts to delink the relationship between caste and sanitation, its lofty goal of cleaning India will remain unachievable.
(Read the full text here http://www.epw.in/system/files/pdf/2015_50/44/Silencing_Caste_Sanitising_Oppression.pdf)