Walking the Finke River: salinity of waterholes?

Hi fellow bushwalker,

I'm Planning to walk the Finke river from stuart Highway to Glen Helen gorges then following the Larapinta trail to Alice spring. Here is the map: https://drive.google.com/open?id=1HJjum3CTfKTe83pqN6dt32802yY&u...

My concern is about the salinity of the waterholes which would be the main source of water supply.

I know by experience that temporary river system tend to have some degree of water salinity. What's your opinion about this walk? is it doable?

My background: I walked the 18 000km stretching from France to Australia. a 7 years walk during which I gain an extensive experience of self-sufficient trekking in deep wilderness, including the arid/desert environment (Kazakhstan steppes, Taklamakan desert, Tibetan High plateau)
- Website: http://www.toutenmarchant.com
- Facebook page: http://www.facebook.com/toutenmarchant

Hope you'll take time to share you expertise
Killian