Help regarding borewell with dirty water

Borewell water is muddy after cleaning of bore with compressor of a pump rating - 10.0 HP and pump depth in bore - 300 Ft.

Hi, We have done bore cleaning recently at depth of 340 Feet, and placed the borewell motor at 300 Ft. Now after cleaning the bore with compressor still the water is muddy. Could you please advise corrective action to be carried to get the water clean from borewell. Kindly advise possible solution to clean the borewell water if it does not get clean after bore the cleaning work.