I live on an acreage where our well provides extremely hard water. It leaves a white residue when it evaporates. We have a test from the hospital and it's high in bicarbonates (pH of about 8.4).
Can very hard water be used for film processing and wet photo printing? When we wash dishes we just have to make sure we towel dry them so that a residue isn't left behind. I'm pretty sure I could ensure I do the same when using a Jobo but I don't know what it will do, chemically, with the photography chemicals.
I'm looking into jumping into 4x5 photography but if I can't process the film at home it's out of the question.