7 Facts About Heavy Water: Products For Sale, Is Deuterium Oxide Safe to Drink?

3. Is Heavy Water Used in Nuclear Reactors?

The next question on our list of 7 facts about heavy water: products for sale, is deuterium oxide safe to drink? regards nuclear science. In nuclear science, heavy water was used to make nuclear reactors and it was extremely valuable during the World War II. Heavy water is known to be useful in slowing down neutrons so it is used as a moderator in nuclear power plants.