Not all. There's a huge difference with some municiple water supplies. I never knew what hard water was until I went to SD and took a shower. I was like WTF is going on here. The damn soap wouldn't come off,
I'm on well now and we got a water test done. Mine is around 140ppm, and around 7.8 pH. Plenty Ca, but not a ton of Mg. I actually have to be careful about adding high Ca amendments since I've been using the same soil for almost 4 years and Ca can build up. I've also never tested my soil, so it's gonna be interesting when I finally do. Soon!