Need costs & comments for various domestic rooftop RWH structures

We are researching the various domestic rooftop rainwater harvesting systems all across India and in particular Rajasthan, Karnataka,Tamil Nadu and the North Eastern States. We are looking specifically at the different types of storage systems like ferro cement tanks, masonry tanks,underground sumps, zinc sheet drums etc and the costs associated with each type including the collection system.

If people can help, do be in touch with us. A slightly detailed question set would come up for collecting data if you are willing.
In the meantime preliminary information on cost per unit of storage with the type of the system would be helpful

Vishwanath
rainwaterclub@gmail.com

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