Well sediment - filter

[widefat]

Thanks for the input ya'll.

I attached a pic of the particles. So what is it? I think I know; and on the bright side, it means I get to rent and play with a mini excavator.

 

[TMGT]

I always have a hard time telling things like this from pictures, but that looks like rust chunks to me. Do you have an iron line coming into the house?