The results are in...and I am a new convert! Sign me up!
Two Classic German Pilsners were brewed, with the same recipe. Only difference was one used straight (filtered) city tap water, and the other used filtered tap water with chemical additions.
Here is the flavor profile for the non-treated beer:
Nice malty nose.
Slightly malt forward in taste.
Hop character very subdued.
Very smooth, mellow, "rounded" in overall impression.
And the treated beer:
Nice hop nose, with hints of malt.
Nice hop profile in flavor, with pronounced bitterness, but not overly bitter.
Hops linger in the after taste slightly.
Overall this has a "sharp" profile.
Both of these beers are very good. It would come down to personal taste in selecting a winner.
I like the Pils with the water treatment.
While these were both the same recipes, there is a .9% difference in ABV.
The non treated example has been aging for about 6 weeks, where the other one was put in kegs 5 days ago.