Recently drilled new well, water is a yellow rusty color. Had well company test water - said it had high iron and small amounts of tannin?? Had iron filter put in and polyfloc feeder pump and 4 x 10 pleated sediment filter. Water is still discolored though not as severe, but unacceptable. When we first pour the water it is cloudy and slightly yellow but in time it (over night) it looks like weak tea and there is a sediment in the bottom of the glass. What now?