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The process of creating water from its constituent elements—hydrogen and oxygen—rather than extracting it from natural sources. In theory, water synthesis is simple chemistry: 2H₂ + O₂ → 2H₂O, plus a lot of heat and a small risk of explosion. In practice, it's energy-intensive and expensive compared to just collecting rainwater or drilling wells. But for arid regions, space colonies, or doomsday preppers, water synthesis offers independence from natural water cycles. The dream is portable devices that can make unlimited clean water from air (which contains hydrogen and oxygen) using solar power. The reality is that your dehumidifier already does this, just very slowly and not very purely. Synthetic water tastes exactly like regular water because it is regular water—just more expensive and with a better origin story.
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