How can I recharge a 400 feet borewell with rain water, Bangalore? Need contact details of RWH consultants

Hello,

Our borewell is of 400ft deep and we found water at 250 ft, inserted a silt casing around the metal casing.

How can I recharge the borewell with rain water, is it possible through pebble or any other type of filtration. I was told that water will not enter down to 250 ft because there is a casing and will only provide wet area around the borewell.

We are planning to do a chip roofing/water proof for our moulding and simultaneously also build the water harvesting structures for our borewell, please suggest what steps can be taken.

Also need contact details of water harvesting consultants in Bangalore.

Thank You

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