'Salty' in the Bible

I made the wilderness its home,and the salty wasteland its dwelling.

and fruitful land into salty wasteland,because of the wickedness of its inhabitants.

But its swamps and its marshes will not become fresh; they will remain salty.

Therefore as I'm alive and living," declares the LORD of the Heavenly Armies, the God of Israel, "Moab will surely become like Sodom, and the Ammonites like Gomorrah, a place overrun by weeds and salty marshes, unpopulated forever. The survivors of my people will confiscate their property, and those who remain of my nation will inherit what was theirs.