Concept:There are some groups that work hard to bring water to the people of different areas.Explanation:About Tarun Bharat Sangh:Tarun Bharat Sangh (TBS) is a non-governmental organization in Rajasthan.It has its headquarter in Bheekampura, Alwar, Rajasthan.The organization is best known for doing ecological research and land development to provide clean water to people.They ask the elders about the water arrangement in their times.They rebuild the old lakes and johads, and also build new ones.It is directed by Rajendra Singh. Thus, the group called Tarun Bharat Sangh is associated with rebuilding old lakes.