Hindu scriptures divide Hindu society into four races namely Brahmin, Kshatriya, Vaishya, and Sutra. Untouchables in the Indian caste system are excluded from the caste structure of Hindus. They were denied permission to use drinking water pools, wells, and road installations used by Hindus. And the Dalits could not enter the temples, they were forced to have separate water bodies and their children had to sit separately in schools.
Source: https://papperpadi.com/first-revolt-for-right-to-water-mahad-satyagraha/