City just sent me a letter saying that any water treatment system that uses salt is no longer allowed, and I have 90 days to change my water treatment system. Ugh. I'm wondering if any of you have encountered this and what options are available. I think I can use potassium instead of salt in my softener, but I just checked Home Depot's website and potassium is $38 per bag! Instead of $6 per bag for salt.