Change of colour of borewell water in Bangalore, Karnataka - Need a solution to the problem

Dear concern,

I am a resident of Balaji Layout, Hebbal. Off late my borewell water colour has changed to mild brown ( muddy)with residues. It was earlier crystal clear and my borewell is hardly 2 years old and I use a submersible pump. 

 Can you please suggest me a solution this problem?

Thanks and regds.

Shanoj Kumar