Chintan is a Delhi-based NGO founded by Bharati Chaturvedi in 1999 with the intent to reduce waste of all kinds. This local NGO uses waste as a tool to fight poverty, child labor, gender-based violence, and climate change while creating green livelihoods. Working in the field of environmental protection for over 2 decades now, Chintan manages over 30 tons of solid and electronic waste every day in the Delhi region through doorstep collection, segregation, recycling, and composting. Chintan, Delhi works with waste recyclers - especially waste pickers - to change the social impact of solid and electronic waste on their lives. From being poisoned by these wastes, they learn to profit from them by working closely with the Chintan team.

As an NGO, Chintan is known for setting up Safai Sena. It is basically an army of cleaners, registered with over 12,000 waste pickers across 3 states in North India. Through local leadership, Safai Sena advocates for the recognition of waste pickers and small traders as a key aspect of waste management in India and against their stigma and exclusion. Chintan supports Safai Sena in its efforts and houses the secretariat in its office. Support Chintan, Delhi through donations, supplies, and volunteer work to protect the environment in the Delhi NCR region