Our well is very deep 160 feet I think. We do have a salt softener system on it and a particulate filter before it goes there that gets changed once a month. For drinking we have two Amway under the counter water filter units. Filters last about two years and it lets you know when to change it. They are just filtering out the sodium from the treated water. Works great for us.
We have to go 300+ feet here in the Ozarks and even then, it's a bit limey. Just ran vinegar through the coffee maker a few days ago because it was taking an hour to brew. Now it's back down to 25 minutes. People go through water heaters out here because they fill up with lime. I made my smoker from discarded water heaters.