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The Importance of a Coffee Filter Machine It is recommended to make sure you use clean, fresh water to get the best results. This lets the distinct flavors of the coffee beans shine through. You can also save money over the long run by using a filter machine, since you only need to purchase coffee grounds and paper filters. You could also save money on cleaning and disposal. Filtered Water Many espresso and coffee machines come with a filter system. Some machines employ reusable filters like the B