Need clarifications as to why the colour of the water from the borewell is brownish

Hello,

We have dug a new borewell,  drilled to 145 ft. Supply line is laid to a depth of 100 ft. The colour of water is brownish and sediments are found in simple filters.

Adjacent plots do not have this problem under similar condition. Can anyone advice as to what could be the reasons.

Thank you.

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