Information on organisations working on rain water harvesting systems

In Uttarakhand

I belong to Roorkee and i would like to find information regarding organisations working in rain water harvesting field in Uttarakhand. I want to develop a home based rain water harvesting system which can be used to quickly store rain water, maybe used for rejuvenating the underground water instead of collecting on the streets. There is a lot of talk about India promoting rain water harvesting but it is hard to find an organisation to do the work.

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