[ancient_geezer]

The ESA release from which the main article derives appears be this one, indicating the near surface atmosphere in the polar region as having the indications of water vapor;

http://www.esa.int/export/SPECIALS/Mars_Express/SEM8ZB474OD_0.html

Mars Express sees its first water – scientific results
 
23 January 2004   ESA PR 06-2004. Mars Express, ESA’s first mission to Mars, will reach its final orbit on 28 January. It has already been producing stunning results since its first instrument was switched on, on 5 January. The significance of the first data was emphasised by the scientists at a European press conference today at ESA’s Space Operations Centre, Darmstadt, Germany.

And not Reull Vallis of your perspective view

[ambrose]

Here's one issue... if Mars does have water, wouldn't it be a finite resource? In other words, if we colonize Mars and tap its water resources, wouldn't it eventually run out since there's no evidence of rain on Mars?