A borewell dug 3 yrs ago to 500 ft with water available at 470 ft. Any options to increase the water source in the borewell?

The best course of action would be to find out a local pump supplier who can test your borewell and install a suitable pumpset that discharges enough water. If enough water does not come out, then you lose only the testing charges. If enough water comes out, then the pump supplier will be able to sell you a pump set besides collecting testing charges.

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