Interested in implementing rainwater harvesting in apartments, Bangalore- Can we divert rainwater from terrace into borewell?

I live in an apartment consisting of 12 flats in BSK III Stage. Water level in our borewell is depleting considerably. We are about 36 people living in the apartment and ample water is spent everyday and in this 10% goes waste. We are interested in implementing RWH before the rainy season. Can we divert the rainwater into our borewell. There are four to eight outlets from our terrace for rain water to flow out. Can we extend the pipes and divert the water to our borewell or do we have to construct separate tanks on the roof or dig pits around our four sides of the building. Please let me know.

Thanks.

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