She said her ministry is working to ensure that huge funds meant for the impoverished communities are spent on their development and not for other purposes.
"I have written to all states in this regard. We will push for a law as well. A committee is working on it," she said here, addressing a National Workshop on Awareness of Rights and Upliftment of Women Safai Karmcharis.
She claimed that protests against the proposed law have already started, but the government is determined to push it through.
"Making a law is necessary for protection of vulnerable communities," she said.
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Terming manual scavenging a blot on the country, Selja said it remains in practice despite being declared illegal years ago.
"We do not know about the exact number of people involved in manual scavenging as states often suppress real numbers. But different organisations inform us about its prevalence which is shocking," she said, noting that women make an overwhelming majority of sanitary staff.