I would like to add a question. I live in southern France, in a small village in the hills. All our water is ground water, which filters through about 300 metres of limestone. The stuff is crystal clear, and you can drink out of any of the 7 or 8 fountains in town. There is limestone in the water, it collects on the bottom of the kettle, white powdery scale that just rinses away with a good sloshing.
Will this stuff get on my film? I'm just getting ready to develop my first rolls since being here, and I don't want to damage them. Maybe a final rinse in distilled?