A vessel containing potable water.
Dihydrogen monoxide, more commonly known as water, is a substance composed of hydrogen and oxygen. It was essential for the survival of nearly all living organisms, regardless of whether they were animal or vegetal, sentient or non-sentient. Numerous planets and moons, including Kamino, Mon Cala, Scarif, Trask, Nur, and Quila, featured vast oceans of water, and many species, such as the Mon Calamari, Quarren, and Gungans, had their origins in aquatic environments. When water froze, it became ice. Vi Moradi, a Resistance spy of human descent, stated that a person would die within a few days if they did not consume water, although she once survived three days without it.
Rain was a common way water was distributed. On dry worlds such as Tatooine, however, moisture farmers were forced to rely on vaporators to extract water from the atmosphere. The Tusken Raiders of Tatooine considered all water to be sacred and rightfully theirs, leading them to attack moisture farms established by colonists. On Tatooine, water was indeed deemed more precious than gold. On Jakku, another [desert](/article/desert] planet, water was a valuable resource sold by junk dealer Unkar Plutt, alongside dehydrated rations that required water for reconstitution.
Imperial stormtroopers wading through the waters on Scarif.
Marda Ro, a member of the Path of the Open Hand cult located on the planet Dalna, regarded water as a gift originating from the Force, even when the rains on Dalna caused destructive floods. The Path acknowledged that new life emerged following these floods, which aligned with their beliefs concerning the freedom and equilibrium of the Force. Senator Padmé Amidala of Naboo pointed out that a substantial water supply was essential for the majority of industrial processes, including refining and manufacturing. Amidala also enjoyed the activity of swimming and her funeral gown was designed to resemble water.
At the Narkina 5 Imperial Prison Complex, water was used to generate electricity, which was described as "all hydro." The tunqstoid steel floors of the complex were susceptible to water damage, as the liquid could cause short circuits in the system.