The only reason I really ph my water is to get it low enough to use my dropsofbalance product, which takes care of the fluoride in my water and adds the right minerals back , I have no chloramines, which is good, and the chloride can be handled by a simple 24-48 hour sitting.
My town uses Chlorine and not Chloramines, luckily, but tap ph is around 7.5.
I use a 5 micron RV water filter on a garden hose I have hooked up to the shower in my office.
Then I add 0.75 grams potassium silicate per gallon. Let that stabilize.
Then I have to add about 3ml of ph down per gallon. Then I ph it and I'm usually dead nuts on beer piss yellow, which is 6.0.
For some reason that is scientifically beyond my understanding, if you add the silicate anytime but first, it falls out of suspension.