Cleaning discolored water

When we take yellow water from river to treat it for drinking, What I do to remove this color in water?
We use this water for drinking and we add to it chlorine, polymer and alum.

Answer:

Use an activated charcoal filter to remove the color. Not the charcoal you use in the barbecue, but the kind used in an aquarium. I have no idea if this will make the water safe to drink. It will only remove the color.