I had blocked that out of my mind, ha! The well water at my grandparents’ place had a ton of carbonates; thankfully our farm was on rural water from when I was a pretty young age! Growing up in my part of eastern South Dakota, well water could be either really awesome, or pretty awful! Dad brews with rural water (mostly taken from the Missouri), and it is excellent with minimal treatment.
That has been our experience, brewing with the local water supply, with little or no treatment. The beers have ranged from good to very good.
Adding a few grams of this and that did seem to make a difference, but it’s impossible to know for sure.
But the last German Pils we brewed and put in the keg a week ago using treated water, has all of us excited. It will be entered in a contest the end of this month.
I’ve had the same experience with wells here in New England. Growing up I lived just a half mile uphill from a limestone quarry, and our well was pretty old and relatively shallow. Our shower head grew stalactites on a regular basis, and our tap water tasted a bit like skim milk. The house I’m in now is less than 10 miles away from that house as the crow flies, but we have a deep well and our water is fairly soft.
That is lucky. But heck, many traditional classic examples of german pilsners have been brewed using local water supplies. I guess your water supply just creates excellent examples of classic german pilsners.
A small craft brewery in our town commented that the water profile of the city tap water is well suited to a variety of beers.
So yes, we are very lucky indeed.