need advise to improve water

dear Permies,

please see below data of my water test report. i think nothing could be worse than this:

Electrical Conductivity: 5030
Calcium+Magnesium: 8.6
sodium: 41.7
Carbonate: Nill
Bicarbonate: 9.8
Chloride: Very high
Sodium adsorption ratio: 20%
Residual sodium carbonate: 1.2

is there something which Permaculture could do to fix these or improve significantly through a mechanism which works for irrigation needs (not a small scale solar still for drinking water)

rgds,
KH