NASA's Phoenix spacecraft & Mars probe has confirmed the presence of ice in the polar soil:
The Mission News site at NASA.gov reports:
Boyton went on to say that "From my standpoint, it tastes very fine." (Mars probe finds water. USA Today, 7/31/2008).
Mars probe finds water (7/31/2008). USA Today, accessed 7/31/2008 at http://www.usatoday.com/tech/science/space/2008-07-31-mars-water_N.htm
NASA Spacecraft Confirms Martian Water, Mission Extended (7/31/2008). NASA website, accessed 7/31/2008 at http://www.nasa.gov/mission_pages/phoenix/news/phoenix-20080731.html