Reverse Osmosis or ...

Published by

Reverse Osmosis or Cationic/anionic Resins are reliable methods. Never heard about humid acid to remove boron. Anyway boron limit for drinking water was 2,4 mg/l (2009). I have heard that a is too much for citric fruits cultives irrigation (affects quality of the orange taste)  but not for pastures. 
There are Modern RO membranes that are selective for boron removal.