We had been having problems with the health of our house plants after moving to our new house with a water softener. The local nursery folks advised that the salt content, over a long term (a year or so) can cause the effects we were seeing. We switched to well water and after a few months the health rebounded. We did lose a few. The softened water is also our pool fill water. Probably why my CH is low (170). I guess I should test my fill water.

I remember washing down the decks at a community pool with pool water as a lad. The grass next to the deck was alway green and healthy.