My water comes directly out of the limestone bed rock. Very hard water the only way it could be harder is if it was frozen. Softener keeps plumbing clean and clothes the right colour but we drink the water straight from the well. I guess I’m doomed.
You ever notice how the trees in some heavily watered places like golf courses have white stained bark on there bottoms? We have calcium too. No need for phosphorus in our grass fertilizer.