Borewell is 100 feet deep and submersible pump is at 50 feet, and a iron block got stuck at 50 feet while cleaning it a few years ago.
A drainage pipe passes at about 3 feet away from the bore. Whenever the draiange pipe gets blocked the water in our borewell gets polluted and foul odour emnates from it.
I am not sure if the drainage water is entering through our damaged casing pipe. Need suggestiosn to repair this borewell.