On Feb 18, 7:21*pm, "Li" wrote:
For potable water, you want the pH to be between 6 and 9 units. *6 to 6.5 is
a little on the lower side but by no means acid or a problem.

Certainly not a major problem but plumber has pointed out that my
plumbing has corroded more rapidly than if pH was higher. It was just
last month that I replaced the leaky water heater. It was still under
warranty but service charge was about $400. You have to balance this
with the outlay of $3,000 for a treatment system quoted from the op.
Plus softeners add salt to the water, replacing Ca with Na and if on a
low salt diet, like me, you may need to drink bottled water.