My wife accidentally ruined my childhood

What's in your municipal water? But worse; what is your government putting into that water?
I never get sick either, but I ain't immune to kidneystones. I passed a 7mm crystal, and a couple of months later a 5mm ice-picked bastard.
Since I have heard horror stories, and cannot prove the water hasn't been purposely poisoned for drinking; I have been drinking distilled water for about 6 months now. Now, when I have to drink tapwater I can taste a noticeable difference. Good or bad I cannot say.
The X-ray/MRI shows 5 more stones in there, and I'm hoping the distilled water will not contribute to any more forming, cuz, man that was painful.