To be more specific, are contaminants removed through the steaming process of a coffee maker? To be more specific, will it remove fluoride?

I'm glad you realize fluoride is bad. Many people still believe it is good for you.
Despite the common myths about its benefits, the NAS has found fluoride can interfere with brain function; weaken bones and teeth; cause disorders in the thyroid and pineal glands; exacerbate diabetes; and increase the risk of a rare bone cancer in boys by up to 500 percent. Its connection to health risks such as cancer, IQ deficits, dementia and immune system disorders have not yet been determined.

Mercola.com Search Results

Cooking/steaming depletes vitamins and minerals.
I don't know where to find out how to remove fluoride for sure cause most sites claim it is good. Your best bet might be to find an alternative that doesn't contain fluoride.

The boiling point of fluoride is 19.54 °C so I would say that boiling water (100 °C) would remove it as it should evapourate long before the water does itself. However I don't know how effective this is or whether they is some other process I don't know about that keeps it in solution.

EDIT

I remembered about reading fluorosis in some indin villages due to fluoride contaminated water and the floride content of tea, as you do. The main methods discussed in order to reduce the fluoride levels are the Nalgonda technique [1] and activated alumina filters [2] amongst other non relevant techniques to your situation.

[1] Untitled Document
[2] Activated alumina - Wikipedia, the free encyclopedia

I have no idea if this is relevent/possible for you but I hope you find it interesting anyway.