"We have been deceived by the previous government and now we will not repeat that mistake," said former Uttar Pradesh Minister Laxmi Narayan Chaudhary, who is participating in the yatra, which will go from Mathura to Delhi.
Earlier, Bharati, the minister for Water Resources, River Development and Ganga Rejuvenation, had shared with the activists the details of the Centre's plan for cleaning the Yamuna.
"Without cleaning the Yamuna, cleanliness of the Ganga cannot be ensured," the minister had told the spiritual leaders and activists.
Ramesh Baba, a spiritual leader under whose leadership the yatra for Delhi had started, said that the activists would not come back from Delhi unless something worthwhile was promised as regards the clean-up of the Yamuna.