It does not look like flowing water to me, more like seepage.
For the most part the water is chrystaline and dry to the touch.
The regolith contains half a percentage point of perchlorates.
You get it out by boiling it off at 24C or by plant expiration
in a greenhouse.
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On Wednesday, 7 October 2015 18:33:25 UTC+1, Tony Lance wrote:
The temperature range of liquid water on Earth is 100 degrees.

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On Wednesday, 7 October 2015 18:32:19 UTC+1, Tony Lance wrote:
The Saline Slopes of Mars