If you have city water and, in particular Kalamazoo City water, Spring is the time of the year to get slugs of rusty water coming into your home. This happens because the city flushes the hydrants to make sure the hydrants all work and to flush stagnant water out of underground pipes.
A water softener will not remove that color from your water.
We recommend that when you see the color coming into your home that you run a cold water tap closest to the water meter until it clears the color up. It may take minutes or even an hour, but it will clear up.
What may happen is that you may need to change your water softener pre-filter as it stopped a bunch of the crud from coming into your home and change the Reverse Osmosis Drinking Water System filters as well just to make sure you have fresh, clean filtration for your home and family.