I’m not a mineral person going to be honest (I work in healthcare lol), so not sure I can really answer your questions. Also sorry being a bit cagey didn’t want to dox myself before a google, like felt 99% sure this was a common mineral, but again not a mineral person.
Basically I lived in some foothills along a ravine made of granite. Home 1 I think we had a neighborhood well and home 2 was a personal well. I can’t list the equipment being used to soften the water (if at all), I just know neither were on town water and home 2 I helped my dad install a softener since there wasn’t one (which tbh didn’t help too much besides making the water coming out of the faucet less cloudy and mildly less thirst inducing).
I don’t think my hometown has a lot of limestone (idk may be wrong, like said I’m not a mineral person, all I know it’s a granite ravine) so can’t comment too much beyond that. This was just my experience with water growing up and what put me off it for a long time.
Goldmage263@sh.itjust.works 2 days ago
Well, hard water means it could be Ca+2 or Mg+2 ions, but it doesn’t have to be. Any metal or mineral in a “high” concentration (often as a dissolved salt) would make water hard. e.g. Salt water is hard compared to tap standards.
The water for the above user certainly could have been corrosive, or an allergic reaction could be the explanation. With a rural, rock ravine environment, any number of minerals could be in the water. You’re also more likely to get other contaminants like toxins in water not properly tested and treated.