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.

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

What’s wrong with Wayland?

It works with WINE ok, but you might get better luck with someone more native.

Seconding SumatraPDF, it has steered me through storms for years.