Mr. Ram Krishnan, born and brought up in Chennai and settled in U.S.A., who is also an alumnus of I.I.T. Madras (1967).
Centre for Science and Environment, an NGO based in New Delhi. They co-sponsored the Rain Centre by spending money on the interiors.
Mr.K.R. Gopinath, a Rotarian and a rainwater harvester from Chennai.
Chennai Corporation, at the time of the inauguration of the Centre by the Hon'ble Chief Minister.
Tamil Nadu Water Supply and Drainage Board, at the time of the inauguration of the Centre by the Hon'ble Chief Minister.
Rotary International Dist. 3230.
Computer Age Management Services Pvt Ltd (CAMS), Chennai.
Mr. Leo Prakash, an alumnus of I.I.T. Madras and settled in Germany.
Arghyam, an NGO founded by Mrs. Rohini Nilekani, Bangalore. (spread over two years)
Samskriti Trust, Chennai. (spread over three years)