Sure. Medium grind, toss it in a bucket with tap water for 8-24 hours, drain through a filter and drink (after doctoring it up, if desired).
I am not trying to get any specific pH. I only measured it because I got an open source pH meter and now I'm using it on everything. 😄
The pH monitor's actual purpose is for measuring the pH of our pasta sauce to see if we can steam can it, or if it has to go in the freezer (we don't have pressure canning equipment).