Water / Legends Water , known scientifically as dihydrogen monoxide , was a compound created from the elements of hydrogen and oxygen , and found on many planets in the galaxy . The surface of planets such as Mon Calamari , Kamino , and Manaan were completely covered in water , and on other terrestrial planets , water was found in oceans , lakes , rivers , and aquifer s . Water was a vital commodity for many life forms , while for other species it was poisonous . Bodies of many species consisted of large amounts of water ; for example , water was about 60 percent of Human body weight . Water in its frozen form was known as ice , and in gaseous form was called " water vapor " , which formed crystals . Sometimes it would condense and fall as " snow " , " sleet " , or " hail " . Planets that experienced consistent ice included Csilla , Hoth , Mygeeto , Ilum , Rhen Var , Anteevy , Ota , Orto Plutonia , Ojom , Rekkiad , and Polus . In the galaxy , no liquid was as versatile as water , and few organisms could exist without it . The unique molecular structure of water gave it several unusual properties necessary to the chemical reactions that sustained life . These properties included its ability to dissolve chemicals , its ability to easily absorb and redistribute heat , its high surface tension , and the fact that it expanded when frozen . Life had a much higher likelihood of developing where water and carbon were present . Water farming . Water was essential for the survival of most species , and the availability of long - term and sustainable sources or means of acquiring water affected the habitability of any particular place . A variety of means , mostly technological , existed to acquire water ; these means — used more extensively on dry and arid planets — were similar to farming and hence termed " water farming . " Groundwater could be extracted from aquifer s through the use of water well s , tap tree s , and hydromech droid s , though sometimes it flowed naturally from freshwater spring s . It was usually processed by an aquifer purifier before being distributed for consumption . On Coruscant , water was gathered and stored in giant artificial aquifers . Dam s were built on some planets to form artificial lakes for the purpose of storing water for later use , providing a reliable source of water . In dry climates and worlds , moisture vaporators were used extensively to harvest whatever atmospheric humidity was available , collecting enough water to sustain three average humanoids , even on hot desert planets like Tatooine . Water survey device s were used to detect high levels of humidity , and moisture vaporators were usually placed in these regions for maximum output . Seas and oceans were a major source of drinking water , but not without first processing it . On planets such as Belasco , seawater was run through a desalination process in order to make it potable . Some planets had methods of processing and converting sewage into pure water , in order to reuse the water . One such method used recirculation pump s . Once water was collected , it was distributed through large networks of irrigation canals , allowing stored water to flow into populated regions for consumption . . One example was the Telos Polar Irrigation System , the primary source of drinking water for Telos IV , though it was abandoned at the time of the Jedi Civil War and used primarily as a Jedi Academy for a time after that . Drinking water . Among its many applications , water was popular for drinking , though not among all species . Water was usually dispensed from sink faucets found in various types of buildings . Water could also be purchased as a cheap beverage at a cantina , or in containers from street vendors . Free drinking water was rare in the galaxy . As a result , it was often a target of smuggling and theft . Soldiers and other operatives usually carried drinking water in canteens , or could sip water through a helmet pipestraw . The quality and purity of drinking water differed throughout the galaxy . On Tatooine , drinking water had a metallic taste and smelled strongly of dust and purification chemicals and contained bits of grit and sand . Most animals and some sentient species drank water directly from lakes and rivers , though not all bodies of water were safe to drink from . For example , the water of Lake Natth on Ambria was poisoned by the dark side of the Force . Other uses of water . Valuable minerals could be mined from seawater . The world - ocean of Utapau , for example , was rich in minerals , salts , and chemicals , and was the only natural resource on the planet which attracted interplanetary trade . By the time of the Clone Wars , however , less than 0 . 9 % of the planet was covered in water . Water was used in cooking , either to boil food such as pashi noodles , or as an ingredient in beverages such as hot chocolate . It also had hygienic applications . Beings often utilized water through fixtures found in refreshers such as showers , baths , and faucets to wash themselves . Water could be used as art or decoration , in the form of elaborate water sculptures , fountains , and artificial waterfalls . For recreation and relaxation , some beings would swim in natural bodies of water , or in artificial swimming pool s . Cultural significance . Water was very significant in some cultures , especially those based on planets where water was rare . The Tusken Raiders of Tatooine considered water wells to be sacred places , and hence vehemently protected them . The Cult of Varn was a religion on Kamar that had a great reverence for water . Other facts . Large bodies of water presented the risk of drowning to many of the air - breathing species of the galaxy . Devices called rebreathers could be utilized by such beings to breathe underwater . The Yuuzhan Vong used gnullith s instead of rebreathers , which were also able to be used by other species . In 33 BBY , Alexi Garyn drowned , though not without the involvement of Darth Maul . Some blasters were known to malfunction after being submerged in icy water . Lightsabers could not operate underwater unless specially modified . A poncho was a piece of clothing that could be used as protection against rain . Behind the scenes . In the ongoing MMORPG " " , water was referred to as " " in the description of the Harvesting Moisture buff , which temporarily refreshes and sustains the player on Tatooine .