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.
Oy! We are fortunate. Our house is on a pretty big hill, right on top of where the glacier stopped moving south. Just north of the Grand River. We are sitting on rocks and boulders, big and colorful. Soil - no clay, mostly sandy and black loose soil from eons of composted forest growth.