We just installed a portable water softener because the place we are staying has very hard water. It's working great, but we are noticing a slight salt taste in our water. We drink lots of water because we use a Soda Stream machine to carbonate our water. I did some research and realize that a small amount of sodium is added by the softener to replace what it is removing from the water. I wonder if anyone else has come up with a solution? Is there a filter I can add outside after the softener that would remove the sale?