Can you use custom pure to filter the water for fluoride in your expresso shots?

Yes, the coffee bar uses water that has been filtered with a custom pure filter.

Custom Pure is a Seattle company that designs and manufactures the best water filters. Central "Coop" has a self service filtered water station set up by Custom Pure. Custom Pure filters produce water qualify similar to distilled water.

Water quality in my coffee is important. Does the custom pure filter they use remove fluoride?

I am not sure what the question has to do with the store? I feel you are asking about a purifier, and not the store.