It is possible to boil water in a microwave, but it is risky. The Food and Drug Administration (FDA) advises that you could be severely injured if the hot water container explodes. When the water reaches boiling point in the microwave, it does not boil as it does on the stove. It's extremely hot, and if you go inside the microwave to add instant coffee or stir it, it could blow up. Yes, your microwave is capable of producing exploding water.