Depending on the state, some agencies will test drinking water samples for a small fee that is much less than $200. In Michigan, the department of health did it for me. This is likely hard water. And if it’s from a well, it should be tested every so often anyways.

Check to see if your local government does this instead.

Debian is 30 years old for a reason.

They used to call this era of minivans, “dustbusters”.

This reminds me of Mario an Essay: https://youtu.be/1ZUhJsf1yUo?si=lXgmGMOqUjHxv7sK